90-Day Sleep Optimisation Protocol: Rebuild Your Recovery From the Ground Up

How this programme adapts

Once a week, the player runs a short check-in and reads the week you actually logged — not the week the plan assumed. Every check-in lands on one of the adjustments below. These are the engine's own rules, rendered word for word.

Consolidation week
Consistency comes first. This week holds your plan exactly and focuses on your wake time, with no new anchors until the foundation is solid.
Tightening your sleep window
You are spending time in bed awake, which trains lighter sleep. We move your bedtime 15 minutes later to build sleep pressure, then give the time back as your sleep consolidates.
Tightening your sleep window
Your rest scores are low. We move your bedtime 15 minutes later to build sleep pressure, then return the time as efficiency rises.
Widening your sleep window
Your sleep is efficient and you feel rested, so you have earned more time in bed. We move your bedtime 15 minutes earlier this week.
On track
Your numbers are in the normal range. This week keeps your window and layers in the next scheduled anchors.

Pattern insights are gated behind your own record: the first unlocks after 14 logged days, and every insight states the evidence it stands on. Milestone reviews at day 30, day 60, day 90 read your whole record and choose their coaching from it.

The 90-day programme map

Every day of the programme, in full — the same steps the interactive player walks you through. Expand a week to read its days.

Month 1 — Foundation · Days 1–30

Establish your sleep baseline and core behaviours

Week 1Sleep AuditDays 1–7

Day 1 · Observe Your Current Sleep Patterns 10 min

Before any changes begin, you need an honest baseline. For the next four days you observe and log only — no new habits, no environment adjustments yet. Today you note your natural sleep and wake times.

Log the time you went to bed last night and the time you woke up today
Rate your energy on waking: 1 (exhausted) to 5 (refreshed)
Write down any habits in the 30 minutes before sleep last night (screens, reading, food)

Day 2 · Observe Your Light Environment 10 min

Light is the primary signal your body clock reads. Today you map your current light exposure — morning, daytime, and evening — without changing anything yet.

Note the first time you got outdoor or bright light today and how long it lasted
Observe how bright your indoor environment is in the two hours before your usual bedtime
Record screen use in the 30 minutes before you tried to sleep last night — device, duration, content type

Day 3 · Observe Your Evening Habits 10 min

Evening habits — caffeine, meals, and activity — all shape how easily sleep arrives. Today you observe and record, not judge or change.

Note the time of your last caffeine today and how far that falls from your usual bedtime
Record the time of your main meal today and estimate the gap to your usual sleep window
Rate your alertness at three points this evening: two hours before bed, one hour before, and at bedtime

Day 4 · Observe Your Sleep Environment 5 min

Your bedroom environment sends signals your nervous system reads all night. Today you take stock of it without making any changes yet.

Estimate your bedroom temperature at the time you go to bed
Identify any light sources visible from your bed (standby lights, street light, phone screen)
Note the dominant sound source in your bedroom at night (traffic, HVAC, partner, silence)

Day 5 · Lock Your Wake Time 15 min

Your four-day observation is complete. Now your anchors go in, starting with the one consistently supported by circadian research: one fixed wake time. Everything else in this protocol is built on top of it.

Pick ONE wake time you can keep all 7 days (for most people, 6:30-7:00am) and set a single alarm for it
Move your phone charger across the room, out of reach of the bed
Set your bedroom to reach about 18C / 65F tonight (thermostat, fan, or open window)

Day 6 · Anchor Morning Light 15 min

Morning light is the strongest signal your body clock reads. Today you add the second anchor: bright light into your eyes early. Your wake-time anchor from yesterday now carries forward automatically.

Within 30 minutes of waking, get 10 minutes of outdoor light with no sunglasses
If you cannot get outside, sit at the brightest window with the curtains fully open

Day 7 · Lock Week 1 (and Optional Support) 10 min

Week 1 established your baseline and installed your first two anchors: a fixed wake time and morning light. Both carry forward automatically. If you want to add a low-risk supplement, here is the one worth discussing with your doctor first.

Do a 5-minute bedroom reset before your wind-down (tidy, dim, cool)
Optional: magnesium glycinate 200-400mg, 1-2 hours before bed. Discuss with your physician before starting any supplement.

Week 2Circadian AnchoringDays 8–14

Day 8 · Commit Your Wake Time for the Block 5 min

Three days with your wake time anchor is enough to commit it for the full 90 days, weekends included. This one rule protects everything else.

Confirm your single wake time for the next 83 days, weekends included, with no backup alarm
Lay out tomorrow morning's clothes tonight to make waking easier

Day 9 · Nail Your Morning Light 15 min

We tighten your morning-light anchor into a reliable routine so it happens automatically, even on hard mornings.

Extend to 10-15 minutes of outdoor light and pair it with a fixed activity (coffee, a short walk)
Put your shoes and a coat by the door tonight so morning light is frictionless

Day 10 · Set Your Earliest Bedtime 10 min

A bedtime that is too early creates time awake in bed, which trains poor sleep. Today you set a firm earliest bedtime as a new anchor and hold the line.

Count back 7.5 hours from your wake time. That is your earliest permitted bedtime. Write it on a card by the bed
Do not get into bed before your earliest bedtime, even if you feel tired

Day 11 · Dim Your Evening 10 min

Bright light at night delays your body clock. Today you add two new evening anchors that run automatically from here. Your morning anchors carry forward on their own.

After sunset, switch off overhead lights and use lamps only
Turn on night mode or f.lux on every screen after 8pm
Note whether the change in light environment affects when sleepiness arrives this evening

Day 12 · Set Your Caffeine Curfew 10 min

Today's new anchor is a firm caffeine cut-off. Set it once and it runs in the background for the rest of the programme, no daily decision required.

Drink no caffeine after 2pm (coffee, tea, energy drinks, pre-workout)
Swap any afternoon coffee for water or a decaf option

Day 13 · Make the Bedroom a Cave 10 min

Cool, dark, and quiet is the target. These are one-time setup steps, not new daily anchors: get the room right once and it works for you every night.

Confirm the bedroom sits around 18C / 65F at bedtime
Block light: fit blackout curtains, or use a comfortable eye mask
Block noise if needed: earplugs or a white-noise source

Day 14 · Week 2 Review — Circadian Anchoring Check 15 min

Two weeks of anchored wake times and morning light have either held firm or shown exactly where they need support. A deviation is not a failure — it is data. Read this week's log honestly, identify the single anchor that drifted most, and name the one adjustment most likely to make Week 3 cleaner.

Review adherence to your fixed wake time across 7 days — note any deviations and why
Review your morning light exposure log — note days you missed and the reason
Identify one circadian-aligning habit that felt sustainable and one that felt difficult

Week 3Sleep PressureDays 15–21

Day 15 · Calculate Your Sleep Efficiency 15 min

Sleep efficiency — the ratio of time actually asleep to time spent in bed — is the single most diagnostic number in this protocol. Below the threshold, the bed has become a place for wakefulness as much as sleep; at or above it, the window is well-calibrated. Calculate it once from your last seven nights and write it down: tomorrow's action depends directly on what that number says.

From your last 7 nights, calculate: total estimated sleep ÷ total time in bed × 100
Write the percentage down in your log
If your efficiency is above 85 out of 100, your sleep window is appropriate — note this

Day 16 · Apply Sleep Window Tightening 10 min

If you drive professionally, operate heavy machinery, or work in a safety-critical role, do not begin sleep restriction without physician guidance — reduced sleep has occupational and legal implications beyond personal health. Moving your bedtime later when you are already tired feels backwards, and it is the mechanism: consolidating sleep pressure into a shorter window is what raises efficiency before the window can be permitted to expand again. Hold your wake time exactly where it is — that anchor is what gives the tightening its leverage. Record your updated boundaries so the change is deliberate, not accidental.

If your sleep efficiency was below 85 out of 100, reduce time in bed by 15 minutes (move bedtime later, not wake time earlier)
Maintain your fixed wake time regardless of how long you slept
Record your updated sleep window boundaries

Day 17 · Nap Management 10 min

Every minute of daytime sleep bleeds the homeostatic pressure you are banking toward tonight's window. During sleep restriction, a nap is a loan against tonight's consolidation, and repaying it at bedtime means arriving with less drive than the window needs. Hold it if you can; if fatigue is severe, a brief nap before mid-afternoon caps the cost without clearing the account.

Avoid any nap today if you are in sleep restriction
If fatigue is severe, permit a maximum 20-minute nap before 3pm only
Note whether any nap today correlates with delayed sleep onset tonight

Day 18 · Monitor Your Homeostatic Sleep Drive 10 min

The Karolinska Sleepiness Scale — a nine-point measure running from fully alert to fighting to stay awake — gives you a calibrated read on how sleep pressure builds through the evening rather than a vague sense of tiredness. Three ratings tonight, taken before any wind-down activities distort the signal, will show you when your pressure genuinely peaks and whether your sleep window is timed to meet it.

At 8pm, 9pm, and 10pm, rate your subjective sleepiness using the Karolinska Sleepiness Scale (1–9)
Write the rating before beginning any wind-down activities
Note the time your sleepiness rating first reaches 7 or above

Day 19 · Build Your Wind-Down 5 min

Your brain needs a runway to land. Today you install a fixed wind-down as a new anchor, so sleep arrives on its own rather than being forced.

Start a 30-minute wind-down at a fixed time before bed, every night
Keep work email and news out of the wind-down window
Choose 2 calm activities for it (reading on paper, a warm shower, light stretching)

Day 20 · Bed-Rising Discipline Practice 10 min

Lying awake in bed teaches the brain that the bed is a place compatible with wakefulness — and that association compounds night over night. Tonight you apply the counter-measure: leave before the bed has the chance to reinforce the wrong signal, wait until sleep is genuinely close, then return. The number of times you apply it tells you how strongly the old association is still running.

Tonight: if you are in bed and not asleep after 20 minutes, get up and go to a dimly lit room
Do a quiet, non-stimulating activity until you feel genuinely sleepy
Return to bed only when sleep onset feels imminent — record how many times you applied this

Day 21 · Week 3 Review — Sleep Pressure Assessment 20 min

Three weeks of anchored wake times have built a track record now worth reading. Today you compare efficiency to Week 1, calculate your average latency, and assess whether sleep pressure is arriving with enough weight before your window opens. The numbers tell you whether the foundation is solid enough to carry the deeper work that starts in Week 4.

Compare this week's sleep efficiency to Week 1 — has it changed?
Calculate your average sleep latency (time to fall asleep) across this week
Identify whether sleep pressure is now building adequately before your sleep window

Week 4Stimulus ControlDays 22–30

Day 22 · Audit Bedroom Use Patterns 15 min

Stimulus control rests on one principle: the bed should cue sleep and nothing else. Every activity performed in bed — scrolling, reading on a screen, worrying, working — weakens that cue over time. Today you take an honest inventory of what you have been conditioning your brain to expect when you get under the covers, then identify the one habit most strongly linked to wakefulness and plan its removal.

List every activity you perform in bed other than sleep and sex
Identify the device or habit most strongly associated with wakefulness in your bed
Plan one concrete change to reserve bed exclusively for sleep

Day 23 · Bedroom Temperature Optimisation 15 min

Core body temperature needs to fall as sleep approaches, and the bedroom environment either assists or resists that drop. Week 1 got you into the right general range; tonight you verify the actual temperature at sleep onset — measured, not estimated — and make any specific adjustment needed to land reliably within the target window.

Check your bedroom temperature tonight — the target range is 16–19°C (61–66°F) for most adults
Open a window, use a fan, or adjust bedding to approach this range
Note your temperature at sleep onset and your subjective comfort rating

Day 24 · Sound Environment Assessment 15 min

Intermittent noise — spikes rather than a steady background — is more disruptive to sleep architecture than a continuous hum at the same average level, because each spike can produce brief arousal without full waking. Tonight you map the actual character of your sound environment and trial a countermeasure, so you know whether masking will handle it or whether the source itself needs addressing.

Identify the primary sound sources in your sleeping environment at night
Tonight, experiment with earplugs, white noise, or silence — note your preference
Record the character of the noise: traffic, partner, HVAC, or intermittent

Day 25 · Bedroom Light Control 10 min

The evening dimming work handled the room; this step handles the bed itself. Standby lights, street glow through a curtain gap, and LED clock displays all reach the photoreceptors that signal your clock — which can penetrate closed eyelids. Identify and cover each source tonight, and if complete darkness is not achievable, trial a sleep mask and note whether the morning feels different.

Identify every light source visible from your bed: standby lights, street light, LED clocks
Eliminate or cover as many sources as possible tonight
If complete darkness is not achievable, trial a sleep mask and record the difference

Day 26 · Pre-Sleep Decompression Design 20 min

The wind-down you installed in Week 3 was a first approximation — enough structure to close the day without a precise fit to your life. One week of practice has already revealed what actually quiets your arousal system versus what simply passes time. Today you design the permanent version: three activities you know work for you, sequenced deliberately and practiced tonight as a complete unit.

Design a 30–60 minute pre-sleep decompression window for your specific life
Write down 3 activities you will use that are calm and non-stimulating
Practice this sequence tonight and rate how settled you feel at its close

Day 27 · Stimulus Control Consolidation 10 min

Stimulus control works as a set — partial application gives partial results. After a week of practice, you know which rules held under pressure and which found a quiet compromise. Today you name the specific situation that caused the most drift, write the concrete response you will use next time it arises, and close the door on deciding in the moment.

Review all stimulus control rules applied this week: bed for sleep only, leave if awake 20+ minutes, fixed wake time
Write which rules you applied consistently and which you struggled with
Plan a specific response for the most common situation where rules broke down

Day 28 · Rest-Day Consistency Practice 5 min

The weekend wake time is where most circadian programs quietly unravel. Sleeping in on rest days shifts the clock later — a misalignment sometimes called social jetlag — and recovering from it can take several nights before the working week is back on track. Hold the anchor today, compare your afternoon alertness to previous rest days when you slept in, and let your own data make the argument.

Maintain your fixed wake time today — it is a rest day and the temptation to sleep in will be high
Record how you feel in the afternoon compared to previous rest days when you slept in
Note whether your alertness curve today feels different from weekdays

Day 29 · Foundation Month Reflection 20 min

Twenty-eight nights of logged data represent something you did not have a month ago: a personal sleep baseline grounded in your own biology and schedule, not a population average. Before crossing into Month 2, read the full log — what the numbers show, what the behavioral changes actually cost in daily effort, and what is genuinely different about how sleep feels now versus Day 1.

Review your full sleep log from Days 1–28
Calculate your average sleep efficiency across Month 1
Write down three behavioural changes you have made this month and assess each one

Day 30 · Month 1 Complete — Foundation Milestone 15 min

Month 1 was not designed to optimize sleep quality — it was designed to install regularity. A consistent wake time, managed light, a working sleep window, and a bed reserved for sleep are the substrate Month 2 is built on. Today you close the ledger: an honest account of what held, what your numbers say, and one specific intention for the optimisation phase that starts tomorrow.

Complete your Month 1 self-assessment: total days completed, average sleep efficiency, longest run of consecutive days
Write a one-paragraph summary of where your sleep stands entering Month 2
Set one specific intention for Month 2 Optimisation

Month 2 — Optimisation · Days 31–60

Refine sleep architecture through targeted techniques

Week 5Deep SleepDays 31–37

Day 31 · N3 Deep Sleep Conditions 15 min

Month 2 turns the lens from the timing and regularity of sleep to what happens inside it. N3 — slow-wave sleep — concentrates in the first third of the night and depends on three converging conditions: sufficient prior wakefulness, low arousal at sleep onset, and a declining core body temperature. Today you identify which of those three your current routine already supports and which one needs the most attention this week.

Note the conditions known to support N3 expression: prior wakefulness, low cortisol, cool body temperature
Identify which of these conditions you are currently meeting in your routine
Plan one change to better support early-night slow-wave sleep

Day 32 · N3 Quality Assessment 15 min

Consumer sleep trackers vary in accuracy, but the pattern they surface — when deep sleep concentrates across the night and how much it shifts from night to night — is more actionable than any single number. Today you read that pattern across the past week, locate when your N3 is most dense, and identify anything in your current routine that may be compressing that early-night window.

If you use a sleep tracker, review your deep sleep duration for the past 7 nights
Note the time of night when deep sleep appears most concentrated — typically the first third
Identify anything in your current routine that may be compressing early-night sleep

Day 33 · Physical Preparation for Deep Sleep 10 min

Vigorous exercise within a few hours of your sleep window onset raises core temperature and stress hormones at precisely the time both need to be falling. The fix is one of timing, not volume — the same session placed earlier in the day carries none of that cost. Review where your exercise fell this week against your sleep window and move anything that is working against the conditions deep sleep needs.

Review your exercise timing this week — note the time of your last vigorous activity before sleep
If vigorous exercise falls within 3 hours of your sleep window, plan to shift it earlier
Accumulate at least 30 minutes of moderate activity today — note the time and type.

Day 34 · Evening Thermal Regulation 15 min

A warm shower or bath taken 60 to 90 minutes before sleep onset does something counterintuitive: it draws blood to the skin surface, accelerates heat loss from the body's core, and steepens the temperature decline that sleep follows. Test it deliberately tonight — timed before your sleep window rather than as part of the wind-down itself — and rate your sense of sleepiness at your sleep window start compared to typical nights.

Take a warm shower or bath 60–90 minutes before your sleep window start
Note whether this appears to accelerate your sense of sleepiness
Ensure your bedroom temperature will drop to your target range before sleep onset

Day 35 · Cognitive Wind-Down Protocol 15 min

Cognitive load at sleep onset — unresolved tasks, open decisions, plans not yet committed anywhere — sustains a form of cortical arousal that no amount of dimming or cooling can reach. The tomorrow list is not a planning exercise; it is a transfer protocol that moves the contents of working memory to paper so the brain has explicit permission to suspend them. Rate your mental arousal before and after to see whether the effect is real for you.

Begin your pre-sleep window 60 minutes before bedtime with no cognitively demanding work
Write a 'tomorrow list' — offload pending tasks and concerns to paper, out of working memory
Rate your mental arousal level before and after this process on a 1–10 scale

Day 36 · Deep Sleep Quality Assessment 15 min

Five days of deep sleep focus introduced several inputs at once — thermal regulation, exercise timing, cognitive wind-down. Today you do the first cross-check: morning restoration scores this week against your Week 1 baseline, looking for any visible shift and the routine change most plausibly linked to it. Six days is early data; the task is pattern recognition, not conclusion.

Compare your morning restoration scores from this week to your Week 1 baseline
Note whether physical recovery correlates with your sleep quality ratings
Identify one factor this week that appeared to most improve morning restoration

Day 37 · Week 5 Review — Deep Sleep Focus 15 min

Five weeks of observations have given you the first thing the protocol set out to build: a personal data set you actually trust. Before the focus shifts to REM architecture this week, compress what you learned about deep sleep into one finding — the change that most consistently moved your morning restoration score. That signal is what carries forward.

Summarise the deep sleep optimisation changes applied this week
Note which change felt most impactful based on morning restoration ratings
Plan one specific continuation for Week 6

Week 6REM ArchitectureDays 38–44

Day 38 · REM Architecture Overview 15 min

REM sleep concentrates in the final third of the night, in cycles that grow longer and denser as morning approaches. A sleep window that is too short, or one cut off by an early alarm rather than completed naturally, loses this stage disproportionately — not a little of everything, but most of the late-night REM. Today you audit whether your current window is actually long enough to reach it.

Note that REM sleep is most concentrated in the final third of your sleep period
Review whether your current sleep window allows adequate late-night sleep time
Identify any habits that cut your sleep window short in the morning

Day 39 · Alcohol and REM Observation 10 min

Alcohol suppresses the second half of the night — the window where REM accumulates — even at moderate doses and even when it feels sedating at first. Tonight you run the comparison on your own data: time of last drink, quantity, and your morning restoration score, matched against a non-drinking night from your log. Your personal before-and-after is more convincing than any general warning.

If you consume alcohol, record the time of last drink, quantity, and your morning restoration score
Compare to a matched night without alcohol from your log
Note whether alcohol use correlates with reduced morning restoration or second-half-of-night disturbance

Day 40 · Morning REM Window 10 min

As you approach waking from a REM cycle, some people experience hypnopompic imagery — fleeting sensory fragments, colours, or voices that dissolve within seconds of full consciousness. These are a marker of REM proximity, not a disturbance, and today you observe them rather than sleeping past them. Your fixed wake time is what gives that final cycle a consistent endpoint; hold it.

Maintain your fixed wake time even if your last sleep cycle feels incomplete
Note whether you experience hypnopompic imagery as an indicator of REM proximity
Record your dream recall and alertness score this morning

Day 41 · Dream Recall Practice 10 min

Dream content evaporates within minutes of waking — the brain that was processing it shifts modes fast. The notepad beside the bed is a capture tool for the first 60 seconds, not a diary: fragments, an emotion, a colour are enough. Over this week you are building the habit of noticing so you have something to correlate with your morning mood and restoration scores.

Keep a notepad by your bed and, on waking, write down any fragment of dream content immediately
Note the emotional tone of any recalled dream without analysis
Observe whether dream recall correlates with mornings where you feel emotionally resilient

Day 42 · REM Quality Indicators 15 min

Wearable devices approximate REM; your own behavioural responses read it more directly. The proxies worth tracking are mood on waking, dream recall on most mornings, and how well your emotional regulation holds through the afternoon — these tend to cluster on the same nights. Today you look back over this week and identify which nights show up clearly across all three signals.

Review your morning mood and emotional processing ratings across this week
Identify days where emotional regulation or creative thinking feels noticeably sharper
Note whether these days follow nights with higher subjective sleep quality

Day 43 · Evening Stress and REM Observation 10 min

Elevated cortisol and sustained arousal interfere with the late-night REM cycles that close out your sleep period. Tonight you measure the input — a single stress rating at bedtime — and tomorrow morning you read the output: dream recall, emotional tone, and mood on waking. Run this consistently over the next three weeks and you will have your own evidence on how your evenings shape your mornings.

Tonight, rate your subjective stress level at bedtime on a 1–10 scale
In the morning, rate your REM indicators: dream recall, emotional tone on waking, morning mood
Continue this observation over the next 3 weeks to build your personal data set

Day 44 · Week 6 Review — REM Architecture 15 min

This was the week you built a personal picture of REM — its proxies, its sensitivities, the evening inputs that seem to shape it. Before the focus shifts to sleep-onset quality next week, identify the one evening behaviour that most consistently correlates with your REM indicators. That is the habit you reinforce in Week 7; the rest stays in place.

Review dream recall log and morning mood ratings from this week
Identify any consistent patterns between evening activities and REM quality indicators
Write one specific REM-protective behaviour you will reinforce in Week 7

Week 7Sleep-Wake TransitionDays 45–51

Day 45 · Sleep Onset Process Awareness 10 min

The transition into sleep is not a switch — it is a progressive withdrawal of conscious control, marked by muscle twitches, thought discontinuity, and the onset of hypnagogic imagery (the brief, involuntary sensory flashes that occur as wakefulness dissolves). Tonight you observe this process rather than trying to force it. Passive attention is both the method and the practice: the more you attempt to make sleep happen, the further it recedes.

Tonight, observe the subjective experience of sleep onset — muscle relaxation, thought shift, hypnagogic imagery
Do not try to force sleep — observe the process passively
Record how the transition feels and whether any specific mental activity extends it

Day 46 · Sleep Latency Monitoring 10 min

How long it takes you to fall asleep reflects the balance between accumulated sleep pressure and your arousal state at the bedroom door — and that balance has been shifting since Week 1. Starting tonight, you estimate latency on waking and log it against your early baseline. The trend line is the measure of whether Month 1's foundations are still holding under Month 2's demands.

For 7 nights, estimate (not time) how long it takes you to fall asleep
Record this within 5 minutes of waking to reduce retrospective bias
Compare this week's average latency to your Week 1 baseline

Day 47 · Cognitive Arousal at Sleep Onset 15 min

When unresolved concerns surface at bedtime, the brain is doing exactly what it was designed to do: use downtime to problem-solve. The worry window at 7pm gives that process a designated earlier slot, so it does not claim the hour you need for sleep. Tonight, when a thought arises in bed, you can say: that is already handled.

If active thinking delays sleep, use a 15-minute 'worry window' at 7pm — write concerns on paper, close the notebook
At bedtime, if intrusive thoughts arise, remind yourself: 'It is written down'
Practice allowing thoughts to pass without engagement — observe, do not pursue

Day 48 · Worry Window Practice 20 min

The difference between a concern that stalls sleep and one that doesn't is usually not the concern itself — it's whether a next step has been committed to. Tonight you run the worry window deliberately: 15 minutes, a timer, paper, and for each item either a concrete next action or a conscious acknowledgment that the outcome is not yet controllable. The notebook closes at the end and stays closed.

At least 2 hours before bedtime, set a 15-minute timer and write down all active concerns
For each concern, write either a next action (for actionable items) or 'accepted uncertainty' (for the rest)
Close the notebook and do not re-open it before sleep

Day 49 · Progressive Muscle Relaxation at Sleep Onset 15 min

Sleep onset is a physical process as much as a mental one — and the body scan works by shifting the object of attention from cognitive loops to somatic sensation. The practice is not about relaxing deeply enough to force sleep; it is about giving the arousal system nothing further to sustain. Tonight you go from feet to head and observe what the transition looks like when it has a physical runway.

At sleep onset, conduct a slow 5-minute body scan from feet to head, releasing tension at each region
Do not focus on sleep — focus only on physical relaxation
Note whether this practice reduces time to sleep onset compared to nights without it

Day 50 · Day 50 — Midpoint Milestone Review 20 min

Fifty days is enough to see a trend. The metrics you review today — efficiency, latency, consecutive days, adherence — are not a report card; they are a calibration check on where the protocol is working and where it needs adjustment. The midpoint letter is the most useful thing on today's list: written for yourself, at this exact moment of the journey, it captures what no data point can.

Review all metrics from Days 1–49: sleep efficiency trend, average latency, longest run of consecutive days
Calculate your total protocol adherence across 49 days (days completed ÷ 49 × 100)
Write a midpoint letter to yourself about what you have learned about your sleep so far

Day 51 · Week 7 Review — Transition Quality 15 min

Sleep-onset quality is where the CBT-I tools are most directly tested: the worry window, the body scan, and the discipline of not engaging with intrusive thoughts all aim at the same target — lowering arousal at the bedroom threshold. Today you assess which approach moved your latency data and which felt forced. The one worth maintaining is the one that worked on a hard night, not just an easy one.

Review sleep latency data across Week 7
Assess which transition techniques felt most impactful: body scan, worry window, passive observation
Plan continuation of the most impactful technique into Week 8

Week 8Lifestyle VariablesDays 52–60

Day 52 · Exercise Timing Experiment 15 min

Vigorous exercise raises core body temperature and sympathetic nervous system activity for several hours afterward — two conditions that compete with the thermal drop and physiological settling that sleep onset requires. This week you shift one session earlier and compare latency and subjective quality on early versus late exercise days. The goal is to know your personal window, not to reorganise your entire schedule permanently.

If you regularly exercise within 3 hours of sleep, shift one session to morning or midday this week
Track sleep latency and subjective quality on days with early vs. late exercise
Note any difference in sleep onset or quality

Day 53 · Caffeine Half-Life Mapping 15 min

Caffeine clearance varies substantially between individuals based on genetic differences in liver enzyme activity — the same afternoon intake that leaves one person unaffected will delay sleep in another. Today you map your actual consumption timeline against a conservative cutoff and see where your current habit falls. If there is a gap, narrowing it is one of the lower-effort refinements still available to you at this stage.

Record every caffeine-containing item consumed today and its approximate time
Work backward from your sleep window start by 8-10 hours to set your caffeine deadline. Individual clearance varies widely, so this conservative window covers both fast and slow metabolisers.
Note whether your last caffeine intake currently falls before this cutoff

Day 54 · Evening Hydration Protocol 10 min

A full bladder at 3am ends the sleep cycle in progress — and that interruption lands in the final third of the night, where REM is concentrated. Front-loading fluid intake before 6pm reduces nocturnal waking without restricting how much you drink through the day. This week you track overnight continuity to see whether the adjustment makes a visible difference.

Front-load fluid intake: consume most of your daily water before 6pm
Limit fluid intake in the 2 hours before your sleep window
Record whether nocturnal waking to use the bathroom changes this week

Day 55 · Social Rhythm Alignment 15 min

Social commitments are legitimate circadian disruptors: a late dinner, a flight, a concert can push your biological clock later in ways that a single extra night of rest does not fully correct. For each late event in your schedule this week, decide in advance — leave earlier, accept a shorter night, or adjust only your bedtime — so the decision is already made when it matters. The clock you protect is the one everything else depends on.

Review your social schedule this week — note events that push your bedtime past your sleep window
For each late event, plan a mitigation: leave earlier, accept reduced sleep once, or adjust bedtime alone (not wake time)
Recognise social rhythms as a genuine circadian disruptor and plan intentionally

Day 56 · Work-Sleep Boundary Audit 15 min

Work communications inside the decompression window do two things simultaneously: they activate the cognitive load that delays sleep onset, and they begin to associate the bedroom with the mental state you are trying to leave behind. Today you identify exactly where your current boundary sits — what time, what device, what room — and then write the specific rule that would actually hold it. Rules only work when they are specific enough to have no grey area.

Identify the latest time you check work communications on a typical day
Note whether work material enters your decompression window
Write a specific boundary — a time or device rule — that would protect your pre-sleep window

Day 57 · Weekend Sleep Consistency 5 min

The circadian clock does not track day names — two late mornings on the weekend shift it later in ways that a single recovery night cannot undo, a pattern researchers call social jet lag. Your wake time holds today and tomorrow; if a late night happens, it is your bedtime that moves, not your alarm. Monday's alertness is the data point that tells you whether it worked.

Maintain your fixed wake time this weekend — record your wake time on both days
If social circumstances cause a later bedtime, maintain the wake time and accept the reduced sleep
Observe your alertness on Monday compared to previous weeks when you slept in

Day 58 · Disruption Recovery Protocol 15 min

Travel, illness, late events — the disruptions you cannot prevent are not protocol failures; they are tests of what you have internalised. The recovery rule is one anchor: fixed wake time the morning after, regardless of how short the night was. Today you write your response to the three disruptions most likely to occur in Month 3 so the decision is already made before you need it.

Write a specific plan for recovering from unavoidable sleep disruptions: travel, illness, late events
The core rule: always return to your fixed wake time the day after a disruption
Identify the disruptions most likely to affect your sleep in Month 3 and write a response for each

Day 59 · Month 2 Reflection 20 min

Month 2 covered sleep architecture, REM proxies, sleep-onset quality, and the lifestyle variables that move them — more ground than most people examine systematically in a lifetime. Today's reflection is a prioritisation, not a summary: of everything you tested, which three factors most reliably shifted your sleep quality? Those are the levers you now own; the one optimisation you carry into Month 3 should be the one with the clearest personal signal.

Review all Month 2 data: deep sleep indicators, REM patterns, sleep latency, lifestyle experiments
Identify your top 3 lifestyle or behavioural factors that most affect your sleep quality
Write one specific optimisation you will carry forward into Month 3

Day 60 · Month 2 Complete — Optimisation Milestone 15 min

Sixty days produces a comparison that matters: your Day 30 baseline, built on circadian anchors and sleep restriction, against your Day 60 data, refined by architecture awareness and lifestyle experiments. The gap between them is what Month 2 built. Entering Month 3, the question changes from what works to what you can sustain independently — and which of those changes have already become automatic.

Calculate your total sleep efficiency and days completed across Month 2
Compare your Day 30 and Day 60 sleep metrics — note the direction of change
Set an intention for Month 3: what specific aspect of sleep do you most want to master?

Month 3 — Mastery · Days 61–90

Integrate your practice into a durable, self-sustaining system

Week 9IntegrationDays 61–67

Day 61 · Build Your Sleep Self-Monitoring System 20 min

The protocol ends at Day 90; the sleep system you are building should not. A log that takes under two minutes a day — bed time, wake time, a quality rating, one notable factor — is sustainable indefinitely, and sustainability is the only standard that matters here. Today you design the version that fits your actual life, not the version that only works when everything is easy.

Design a simple, sustainable daily sleep log you can maintain without this protocol
It should capture: time to bed, time to wake, sleep quality 1–10, one notable factor
Ensure it takes no more than 2 minutes per day — sustainability matters more than depth

Day 62 · Early Warning Indicators 15 min

Sleep degradation rarely arrives as a sudden failure — it accumulates through signals that appear days before your data reflects them. Today you catalogue your personal early warning set: the irritability, concentration drops, or afternoon fatigue that consistently appear before the problem becomes measurable. These are your tripwires, and the tools you built in Months 1 and 2 are the response system they should activate.

Identify your personal early warning signs that sleep is degrading: irritability, focus drops, afternoon fatigue
Write these as a short personal list
Identify which of your Month 1–2 interventions most reliably corrects these signs

Day 63 · Disruption Recovery — Live Practice 10 min

Knowing how to recover from a disruption and having actually practised it are not the same thing. Today you audit a real example from the past two weeks: what you did, how it aligned with the recovery plan you wrote on Day 58, and where the gap was. That gap is what the final month closes.

Identify the most recent sleep disruption you experienced in the past 14 days
Assess how you responded and whether your response was consistent with your protocol
If not, write what you would do differently

Day 64 · Seasonal Adjustment Awareness 15 min

Seasons shift the light conditions your morning anchoring depends on — what works in summer may need deliberate recalibration come autumn or winter. Today's work is anticipatory: mapping the next environmental disruption before it arrives and writing one specific adaptation for it. That single prepared fix is worth more than three improvised ones under pressure.

Note the current season and how light conditions affect your morning light exposure practice
Identify upcoming seasonal or schedule changes that may challenge your routine
Write one specific adaptation for the most likely challenge ahead

Day 65 · Sleep Debt Awareness Practice 15 min

Sleep debt — the accumulated shortfall when nightly sleep falls below your biological need — builds quietly and becomes visible only in hindsight. Two weeks of your log now gives enough resolution to see whether you are carrying any into Month 3's final push. The picture you build today informs how deliberately you protect the sleep window through to Day 90.

Review your sleep log for the past 2 weeks and identify any period of cumulative short sleep
Note how chronic short sleep manifests for you: cognitively, emotionally, and physically
Identify whether you have been carrying any unresolved sleep debt into Month 3

Day 66 · Self-Compassion and Recovery 10 min

CBTi — the cognitive-behavioural approach this protocol is structured around — addresses the mental layer explicitly because anxious self-monitoring can compound sleep difficulty rather than resolve it. Today you read your adherence data accurately rather than moralistically: imperfect execution over 65 days is still 65 days of data. What the log shows is information, not a verdict.

Review your overall protocol adherence percentage — acknowledge what you have accomplished
Write one sentence of genuine appreciation for your effort over 65 days
If adherence has been imperfect, note whether imperfection is cause for abandoning or adjusting the protocol

Day 67 · Week 9 Review — Integration Check 15 min

The test Month 3 is running is automaticity: habits that still depend on daily decision-making are vulnerable in ways that automatic ones are not. This review separates the anchors that have become structural from those still running on willpower alone. One specific reinforcement plan for the least-automatic habit is the exit condition for today.

Review all 7 days of this week's log — were your core behaviours automatic or still effortful?
Note which Month 1–2 habits now feel habitual versus still requiring deliberate effort
Identify one habit not yet automatic and set a specific reinforcement plan

Week 10PersonalisationDays 68–74

Day 68 · Identify Your Sleep Archetype 20 min

Your chronotype — your genetically-influenced tendency toward earlier or later sleep timing — may not match the schedule you have been running. Sixty-seven nights of data is a meaningful sample for reading your actual pattern, not the one you would prefer. Naming it in a paragraph of your own words is how preference becomes self-knowledge.

Review 67 days of sleep data and identify your dominant sleep pattern
Are you reliably early, late, or variable? Does your preferred sleep window align with social time demands?
Write your personal sleep archetype description in one paragraph

Day 69 · Fine-Tune Your Sleep Window 15 min

The sleep window you set in Week 2 was calibrated from a formula; 68 nights of response data lets you sharpen it by 15 minutes in either direction. Consistent poor morning alertness and consistently waking before the alarm feeling fully rested are the two diagnostic signals — opposite problems, same scale of adjustment. This is precision work, not reconstruction.

Based on 68 nights of data, assess whether your current sleep window is optimal for you
If morning alertness remains consistently poor, consider moving bedtime 15 minutes earlier
If you consistently wake before your alarm feeling fully rested, your window may be longer than needed

Day 70 · Personalise Your Wind-Down 20 min

Seventy nights of field-testing your decompression routine have produced evidence that the formula you started with could not. Today you distil that into the two or three elements that reliably produce a settled, sleep-ready state and write them on a card you will keep. That card is the wind-down you will run independently when the daily structure lifts.

Review your decompression routine from Month 1 — what has evolved over 70 days?
Identify the 2–3 elements that reliably produce a settled, sleep-ready state
Write your permanent, personalised pre-sleep routine as a short card to keep

Day 71 · Optimise Your Morning Architecture 15 min

Seventy days of anchors have shaped your morning into something — today you examine what it has become and design it deliberately. Treat the first 30 minutes as a dedicated circadian-anchoring slot (the window when light and movement cues register most directly on your body clock) and plan it the night before. Three specific behaviours for your context, written down, is the outcome.

Review your morning routine — does it reliably set your circadian clock for the day?
Treat the first 30 minutes of your morning as a circadian anchoring window and plan it intentionally
Write the 3 most important morning anchoring behaviours for your specific context

Day 72 · 90-Day Sleep Log Deep Review 25 min

The full arc of your log — not just recent weeks — is the object of today's work. Sleep efficiency (the proportion of your time in bed actually spent asleep) tracked across all three months gives you a trend; identifying your three worst and three best nights and looking for explanations converts data into understanding. This is the most complete picture of your own sleep you have ever had.

Review your complete sleep log from Day 1 to present
Estimate your sleep efficiency across the three months — is the trend positive?
Identify the 3 days of worst sleep and 3 of best sleep — look for environmental or behavioural explanations

Day 73 · Stress-Sleep Interface Mastery 15 min

You now have enough observed instances — pre-deadline nights, recovery nights, disrupted travel nights — to write your personal stress-sleep mechanism rather than a generic one borrowed from research. Three buffering behaviours that your own log confirms work for you are the actionable output. The final step is planning when to deploy them, not just knowing they exist.

Write your current understanding of how stress affects your sleep — your personal mechanism
Identify your 3 most impactful stress-buffering behaviours before sleep
Plan how you will apply these during known future high-stress periods

Day 74 · Week 10 Review — Personalisation Check 15 min

This review is different from Week 9's: the question is not which habits are automatic, but which protocol elements you have bent to fit your actual life. The non-negotiables you identify here are the ones that carry forward after Day 90 on their own weight. Optional elements are not failures — they are data about what your specific biology and schedule actually need.

Review adherence and quality this week
Identify which personalised adaptations you have made to the protocol
Write a brief assessment: which protocol elements are non-negotiable for you, and which are optional?

Week 11EnvironmentDays 75–81

Day 75 · Sleep Environment — Final Audit 20 min

Every environmental intervention in Month 1 was an approximation made without the body-response data you now have. Today's sweep — temperature, light, sound, air, sleep surface — is the definitive one. One specific change to the one remaining gap is the deliverable.

Conduct a full bedroom audit: temperature, light, sound, mattress and pillow comfort, air quality
Identify the one remaining environmental factor that most limits your sleep quality
Make or plan the specific change needed to address it

Day 76 · Partner and Co-Sleeping Factors 15 min

Your own behaviour is the variable you have had greatest control over; today you audit the one you share. If a co-sleeping environment is introducing friction — mismatched schedules, movement, noise, light from another person's device — naming the specific friction point is the precondition for addressing it. One concrete accommodation or conversation is today's exit condition.

If you share a sleeping environment, assess whether your partner's sleep patterns affect yours
Identify specific friction points: different schedule, movement, noise, light
Write one specific accommodation or conversation you need to have, if any

Day 77 · Technology and Sleep 15 min

Your relationship with devices before bed has changed over 77 days, which means today's audit will not produce the same inventory as Day 1. The platform that disrupts your pre-sleep state is often not the one you initially suspected. A boundary you can sustain permanently is built differently from one that was strict enough to be abandoned by Month 2.

Audit your final 30 minutes before bed: what technology do you interact with?
Identify the device or platform that most disrupts your pre-sleep state
Design a specific technology boundary you can sustain permanently

Day 78 · Remaining Disruption Sources 15 min

The disruptions that persist into Month 3 do so for a reason — they are structural, infrequent-but-high-impact, or more sustainable to accommodate than to eliminate. Ranking what remains by both frequency and impact puts them in the right order for action. The honest triage — what to solve, what to manage, what to accept — is today's deliverable.

Review your log for the past month and identify the most frequent sleep disruption causes
Rank them by impact and frequency
For each major source, note whether it is within your control, partially controllable, or requires acceptance

Day 79 · Sleep Hygiene Maintenance Plan 20 min

A personalised 10-point plan drawn from 79 nights of experience is more actionable than any generic checklist you started with. Noting which points are fully embedded, which still need scaffolding, and which remain aspirational is not pessimism — it is the diagnostic that tells you where to keep attention after the programme ends. Three will require ongoing effort; knowing precisely which three is the point.

Write your personal 10-point ongoing sleep hygiene plan based on what you have learned
For each point, note: fully implemented, partially implemented, or still aspirational
Identify the 3 points that will most require ongoing effort to maintain

Day 80 · Accountability Structures 15 min

The daily structure of this programme has been carrying a significant portion of the accountability work without announcing itself. Deciding now — before it lifts — whether you need an external mechanism (a check-in partner, shared log, or scheduled monthly review) or whether internal cues will hold the system is the structural decision that determines what happens after Day 90. Writing that decision down converts intention into architecture.

Identify whether external accountability would help you maintain your sleep practice after Day 90
If yes, write a specific plan: a check-in partner, shared log, or scheduled review
If no, write what internal accountability mechanism will replace it

Day 81 · Week 11 Review — Environment & Integration 15 min

This week's review holds a narrower lens than previous ones: the environmental and social variables specifically, not the behavioural core. The distinction between what has been resolved and what remains active tells you where to direct post-programme attention. One specific action on the most significant remaining factor closes the week.

Review this week's progress on environmental and social sleep factors
Identify which factors are now resolved and which remain active challenges
Write one specific action to address the most significant remaining environmental factor

Week 12CompletionDays 82–90

Day 82 · Full Sleep System Review 25 min

Day 82 is a system-level read, not another nightly log review. The question is whether the whole infrastructure — circadian anchors, sleep window, environment, stress management, personalised adaptations — holds together as a coherent, durable unit. The one-page summary you write here is the first draft of the document you will have when the daily guidance ends.

Review your complete protocol journey: sleep efficiency trend, longest run of consecutive days, total days completed
Identify your three highest-impact protocol elements
Write a one-page summary of your sleep system as it stands entering Day 82

Day 83 · 90-Day Progress Assessment 20 min

Your Day 1 data — latency (how long you took to fall asleep), early-week quality ratings, morning restoration — only becomes meaningful when compared to where you are now. Reading all three months as a trend, rather than averaging them into a single number, tells you whether the system moved and in which direction. An honest written assessment, including where little changed, is more useful than a satisfying one.

Calculate your overall sleep efficiency across all three months
Compare Day 1–7 metrics to Day 81–82 metrics: latency, efficiency, morning restoration
Write an honest assessment of net change over 90 days

Day 84 · Identify Your Top Three Wins 15 min

The wins worth recording are the ones that changed a behaviour durably, not the nights you happened to sleep well. Tracing each win back to the specific protocol element that drove it builds the causal map that lets you reconstruct what works if sleep degrades later. Whether those changes reached into other areas of your life beyond sleep is worth noting honestly.

Write down the three most meaningful changes in your sleep behaviour over 90 days
For each win, identify the protocol element that drove it
Note whether these wins have affected other areas of your life beyond sleep

Day 85 · Obstacles and Solutions Mapping 15 min

Three persistent obstacles across 90 days is a realistic inventory — enough to work with, not so many that the exercise becomes discouraging. The strategy that actually moved each one — not the recommended approach, but the one that worked for you — is what goes on record. One remaining unresolved obstacle and your honest plan for it is how the session closes.

List the 3 most persistent obstacles you encountered over 90 days
For each obstacle, write the coping strategy that worked best
Write one remaining unresolved obstacle and your honest plan for it

Day 86 · Craft Your Ongoing Protocol 25 min

Five to eight rules on a single page, each specific enough to act on without translation: that is today's output. Not a summary of this programme, but your programme — grounded in your 90 days, covering only the elements that proved non-negotiable for your specific biology and schedule. This is the document that runs when the daily guidance does not.

Distil your personal sleep system to 5–8 rules on a single page
Each rule should be specific, behavioural, and grounded in your 90 days of experience
File this as your reference document for after the programme ends

Day 87 · Cement Your Practice 15 min

Sharing your 90-day completion with one person whose opinion you value is not ceremony; it is a mechanism for making the commitment durable beyond the programme's structure. The single specific behaviour you commit to protecting for the next 30 days is your first step into self-governed practice. Naming the week of each month you will review your log is the difference between intending to maintain and having a plan to.

Share your 90-day completion with one person whose opinion you value
Write one specific commitment for the next 30 days — one thing you will continue without this daily structure
Identify the week of the month you will review your sleep log going forward

Day 88 · Final Sleep Log Review 20 min

Eighty-eight nights read in one sitting — not week by week, but as a single document — produces a perspective that rolling reviews cannot. The single most useful piece of data you collected is worth naming precisely, because it is what you will carry forward; what you choose to stop tracking matters just as much. A log calibrated to your actual needs going forward is the one that will be kept.

Review your full sleep log one final time — all 88 nights
Identify the single most useful piece of data you collected across the protocol
Write what you will continue to track and what you will let go of

Day 89 · Letter to Future Self 25 min

Writing to yourself six months from now requires the kind of operational specificity that general retrospectives rarely achieve: what you learned, what changed structurally, what needs protecting, and what signals to watch for if the architecture starts to degrade. This is not motivational writing; it is instruction from a version of you who holds knowledge the future-you may have forgotten. Schedule the reminder before you close the page.

Write a letter to yourself to open in 6 months
Include: what you learned, what you changed, what to protect, what to watch for if sleep degrades
Schedule a reminder to open it — digital calendar or physical envelope

Day 90 · Day 90 — Mastery Complete 20 min

The Day 1 log you are reading today was written before any of this was automatic — before the wake time held, before the anchors stacked, before the system became yours. The distance between those early notes and this week is the record of ninety days' work. Export the data, close the log, and carry what you built forward.

Mark this day complete and acknowledge 90 days of committed practice
Export your full protocol data for your records
Review your Week 1 sleep log — compare those early notes to this week, and note what changed and what you kept.

The evidence

The frameworks this programme is built on — each anchored to peer-reviewed research, cited with its DOI and verified against the Crossref registry at build time. Where the evidence has honest limits, the framework says so.

Two-Process Model

Borbély, Daan, Wirz-Justice, et al. · J. Sleep Research · 2016

Sleep regulation as the interaction of homeostatic sleep pressure (Process S) and the circadian drive (Process C) — the foundational quantitative framework for understanding when and how much we sleep.

DOI: 10.1111/jsr.12371

Van Dongen et al., 2003 — Dose-response of chronic sleep restriction on sleep pressure doi:10.1093/sleep/26.2.117

Circadian Rhythmicity

Czeisler, Duffy, Shanahan, et al. · Science · 1999

The endogenous ~24-hour biological clock and its role in sleep-wake timing, alertness, and hormonal patterning — including the impact of light exposure on circadian phase.

DOI: 10.1126/science.284.5423.2177

Wright et al., 2013 — Entrainment to the natural light–dark cycle doi:10.1016/j.cub.2013.06.039
Chang et al., 2014 — Evening light delays circadian phase doi:10.1073/pnas.1418490112

CBT-I — Cognitive Behavioural Therapy for Insomnia

Trauer, Qian, Doyle, et al. · Ann. Internal Medicine · 2015

The gold-standard first-line treatment for chronic insomnia: stimulus control, sleep restriction therapy, sleep hygiene, relaxation training, and cognitive restructuring — meta-analytically confirmed.

DOI: 10.7326/M14-2841

Sleep Architecture & Staging

Rasch & Born · Physiological Reviews · 2013

The cyclic structure of NREM and REM sleep across the night — N3 slow-wave sleep for physical restoration; REM for memory consolidation and emotional processing.

DOI: 10.1152/physrev.00032.2012

Diekelmann & Born, 2010 — Memory-consolidation function of sleep doi:10.1038/nrn2762
Xie et al., 2013 — Glymphatic metabolite clearance during sleep doi:10.1126/science.1241224

Behavioural & Environmental Factors

Drake, Roehrs, Shambroom, et al. · J. Clinical Sleep Medicine · 2013

Evidence-based behavioural levers — caffeine, alcohol, light, and social rhythms — and their impact on sleep quality and architecture.

DOI: 10.5664/jcsm.3170

Wittmann et al., 2006 — Social jetlag: biological vs social time doi:10.1080/07420520500545979
Roenneberg et al., 2012 — Social jetlag and metabolic risk doi:10.1016/j.cub.2012.03.038
Hirshkowitz et al., 2015 — NSF sleep-duration recommendations doi:10.1016/j.sleh.2014.12.010

Safety & fit

This 90-day protocol is a structured, educational programme describing behavioural sleep practices informed by published sleep science. It is not medical advice and is not a substitute for professional care. Consult a physician before starting — particularly if you have a history of bipolar disorder, a seizure disorder, or significant sleep apnoea. Every framework it draws on is referenced to peer-reviewed literature for educational context only.

Who should check first

['Bipolar disorder or a history of mania', 'Seizure disorder or epilepsy', 'Pregnancy', 'Safety-critical driving or operating heavy machinery']

Questions, answered

How much time does this take?

The Sleep Architecture Protocol runs 90 days across 12 themed weeks. Each day asks for between 5 and 25 minutes of deliberate practice — the daily tasks are listed in the programme map on this page, so you can read the whole arc before you start.

How does the programme adapt to my week?

A weekly check-in reads the week you actually logged — not the week the plan assumed. Depending on the week you actually had, it lands on one of 5 adjustments: Consolidation week; Tightening your sleep window; Tightening your sleep window; Widening your sleep window; On track. Milestone reviews at day 30, day 60, day 90 read your whole record so far.

Where is my progress stored?

Entirely in this browser. Your daily log, notes, and check-ins live in local storage on this device — no account, no server, and nothing you type is transmitted. You can export your full log as a CSV file or delete everything, at any time, from the My log tab.

Is this medical advice?

No. This is a structured, educational programme built on peer-reviewed research — it is not medical advice, therapy, or a substitute for professional guidance. The full disclaimer, and every framework the programme draws on with its DOI, is on this page.

What happens if I miss days?

The programme is built to absorb real weeks. The weekly check-in works from whatever you logged: a thin week adjusts the plan rather than failing you, and no adjustment ever deletes your record. The adaptation rules above describe exactly how each kind of week is handled.

Where does the evidence come from?

Every phase of the programme is grounded in 5 evidence frameworks — 13 peer-reviewed references in total, each cited with its DOI in the evidence section on this page and verified against the Crossref registry at build time. Where the evidence has honest limits, the framework says so.

Go deeper

Hand-picked companions to this programme from across the estate — the baseline tool, the research deep dives, and the terms worth two minutes each.

assessment The Sleep Assessment A baseline reading before day 1 — retake it after the programme and compare.
deep-dive Deep Sleep: The Science of Slow-Wave Sleep Glymphatic clearance and the recovery mechanics this programme protects.
deep-dive REM Sleep: The Neuroscience Dreaming, memory consolidation, and the second half of the night.
glossary Sleep Debt Why it cannot be fully repaid on a weekend.
glossary Sleep Onset Latency The 15-minute reference range your diary entries relate to.

Programme record

A living programme keeps a public record. Any future change to the daily tasks, the check-in rules, or their thresholds bumps the version and lands here.

v1.0 · July 2026Initial published programme: 90 daily practices across three phases, weekly adaptive check-ins, and milestone reviews at days 30, 60 and 90.