Metabolism Protocol
A 90-day programme for metabolic awareness, learning to read your body's signals of energy, hunger, and steadiness, grounded in metabolic science
90 days · 12 weeks · 10–25 min/day
The full programme · in print
The programme, on paper
A 90-day programme for metabolic awareness, learning to read your body's signals of energy, hunger, and steadiness, grounded in metabolic science
The programme moves through three phases: Foundation (days 1–30) — build awareness of your core metabolic signals: energy, steadiness, and fullness; Optimisation (days 31–60) — notice the everyday levers, movement, meal timing, and sleep, as awareness rather than rules; Mastery (days 61–90) — carry the awareness into real life and make it a gentle, lasting habit.
- 90days
- 12weeks
- 3phases
- 10–25 min/daycommitment
- 30 / 60 / 90milestone reviews
- 6evidence frameworks
The player above carries the working tools: calendar export (.ics), a print edition, CSV and full-progress export — and everything you log stays in this browser.
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
Not enough entries yet to adjust your plan. This week holds steady and keeps the focus on one thing: noticing your energy after meals. Nothing new is added until the habit of noticing is in place.
- Lowering the bar
This week was hard. We shrink the practice to its smallest form: noticing one signal, once. The goal this week is one honest observation, not many.
- Holding steady
Momentum is low, which is normal while a new habit of noticing is still forming. This week keeps your current practice and adds nothing until it feels steadier.
- Building on it
You paid attention consistently this week. We add the next signal to notice, whether that is movement, timing, or sleep. Gentle and steady is the aim.
- On track
Your entries are in the normal range. This week keeps your current practice and layers in the next signal to notice.
Pattern insights are gated behind your own record: the first unlocks after 5 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
Build awareness of your core metabolic signals: energy, steadiness, and fullness
Week 1The Metabolic AuditDays 1–7
Day 1 · Map Your Metabolic Habits 15 min
Your body is already tracking its own metabolic signals — energy after meals, how long fullness lasts, and the steadiness between them. This week you begin reading those signals, without changing anything. Today you write down the current picture of how you eat, move, and sleep, honestly and without judgement.
- Write down roughly how you eat, move, and sleep on a normal day
- Mark the one you know the least about
Day 2 · Notice Your Energy 10 min
Your energy after meals is a signal worth watching. Today you notice it once, without trying to change anything.
- After one meal today, notice whether your energy stayed steady or dipped
- Note what the meal was, without judging it
Day 3 · Notice Your Hunger 10 min
In one large study, glycemic responses to the same bread differed about five-fold between the lowest and highest deciles, meaning your pattern of hunger and energy is genuinely personal. Today you simply notice when your own hunger returns.
- Notice how long after one meal your hunger came back
- Note whether the meal felt filling or light
Day 4 · Notice Your Movement 10 min
How much you move through a day shapes how your body handles food. Today you notice your movement, without changing it.
- Notice how much you moved and how much you sat today
- Note one moment you could have moved but did not
Day 5 · Notice Your Timing 10 min
When you eat, not just what, is part of the picture. Today you notice the timing of your meals.
- Notice the times you ate today, from first bite to last
- Note whether your eating was spread across the day or bunched
Day 6 · Notice Your Sleep 10 min
Sleep and metabolism are linked, so sleep belongs in this audit. Today you notice how you slept.
- Note roughly how long you slept last night and how rested you feel
- Note whether short sleep tends to change your hunger the next day
Day 7 · Metabolic Audit: Week One 15 min
The first week is done. You have looked at your energy, hunger, movement, timing, and sleep, without changing any of them. Today you read it back and set a gentle intention.
- Read back your notes from days one to six
- Write one sentence on the signal you want to pay attention to first
Week 2Blood Sugar AwarenessDays 8–14
Day 8 · The Post-Meal Dip 10 min
Some meals leave you steady; others are followed by a dip and a craving. Today you notice one dip.
- After one meal today, rate your energy as low, medium, or high, then note whether it dipped or held
- Note what you had eaten, as information not judgement
Day 9 · Your Own Patterns 10 min
Research using glucose monitors found people respond quite differently to the same food. Today you look for your own pattern rather than a rule.
- Notice a food that seems to sit well with you and one that does not
- Note that your pattern is yours, not a universal rule
Day 10 · The Steady Meal 10 min
A meal that keeps your energy level is worth knowing. Today you notice one that steadied you.
- Notice a meal today after which your energy stayed even
- After that meal, take a short five-minute walk and note whether your energy stayed steadier than on days you sat
Day 11 · Cravings as a Signal 10 min
Some research suggests a sharp craving may follow a quick rise and fall in blood sugar, though the link varies between people. Today you notice a craving without acting on the story around it.
- Notice one craving today and what came before it
- Note whether it followed a particular kind of meal
Day 12 · Your Steadiest Meals 10 min
Looking back over this week, you can start to see which meals left you steadier and what they had in common. Today you compare.
- Look back at your notes from this week and name which meal appeared most often as steady
- Note what those steady meals seemed to share
Day 13 · A Timing Experiment 10 min
A small experiment gives your noticing a point of contrast. Today you try one gentle timing change.
- Try eating your usual lunch about 30 minutes earlier than normal and note any difference in your energy afterward
- Note what you observed, without expecting a fixed result
Day 14 · Week Two Review 15 min
A week watching your energy and blood-sugar signals. Today you read it back.
- Read back your notes on your energy patterns
- Write one sentence on what steadies you and what spikes you
Week 3Energy and FullnessDays 15–21
Day 15 · Comfort Between Meals 10 min
Some researchers associate being able to go comfortably between meals with metabolic flexibility, though this is a rough everyday proxy, not a direct measure of how your cells switch fuels. Today you notice how comfortable your gaps are.
- Notice whether you can go between meals comfortably or feel desperate
- Note what the difference seems to depend on
Day 16 · The Crash-and-Crave Cycle 10 min
A spike, a crash, and a craving can chain into a cycle. Today you notice whether yours does.
- Notice whether an energy crash led you straight to a craving today
- Note where the cycle might be broken
Day 17 · Steady Versus Spiky Days 10 min
Some days feel even, others feel like a rollercoaster. Today you compare.
- Think back to a steady day and a spiky day
- Note what was different about how you ate, moved, or slept
Day 18 · Energy on the Move 10 min
How your energy holds during activity is another signal. Today you notice it.
- Notice how your energy felt during any activity today
- Note whether a recent meal seemed to help or hinder
Day 19 · What a Steady Day Feels Like 10 min
Knowing what steadiness feels like gives you something to aim at. Today you describe it.
- Write down what a metabolically steady day feels like for you
- Note which signals told you it was steady
Day 20 · Your Metabolic Signals 12 min
You now have several signals to read: energy, hunger, cravings, steadiness. Today you pull them together.
- List the signals you have learned to notice so far
- Note which one is clearest for you
Day 21 · Week Three Review 15 min
A week reading your energy and steadiness. Today you read it back.
- Read back your notes on energy and fullness
- Write one sentence on what a steady day looks like for you
Week 4Protein and FullnessDays 22–30
Day 22 · Notice the Fullness 10 min
How full a meal leaves you, and for how long, is worth noticing. Today you pay attention to one meal's staying power.
- After one meal, notice how full it left you and for how long
- Note what the meal was made of
Day 23 · What Holds You Longer 10 min
Different meals hold you for different lengths of time. Today you compare, without any rule about what a meal should contain.
- Compare two meals from recent days by how long each kept you full
- Note what the more filling one was like, as your own observation
Day 24 · The Quick-Hunger Meal 10 min
A meal that leaves you hungry again quickly is worth noticing. Today you pay attention to one and what it was made of.
- Notice a meal today that left you hungry again quickly
- Note what it was mostly made of
Day 25 · Balance on the Plate 10 min
Noticing the makeup of a meal is different from counting or restricting it. Today you simply observe the balance.
- Look at one plate today and notice its rough balance, without changing it
- Note how that balance related to how full it left you
Day 26 · Fullness Without Counting 10 min
This is about listening to fullness, not tallying numbers. Today you practise reading your own satisfaction.
- Eat one meal paying attention to when you feel comfortably satisfied
- Note that the signal is your body's, not a number's
Day 27 · Your Filling Meals 10 min
Knowing which of your usual meals actually hold you is useful. Today you name a few.
- List two meals you already eat that keep you full and steady
- Note what they have in common
Day 28 · An Urge, With Curiosity 10 min
An urge to eat can connect to many things, hunger, tiredness, habit, or feeling. Today you meet one with curiosity rather than judgement, holding all of them equally.
- Notice one urge to eat and what it might be connected to, without ranking any as wrong
- Note it with curiosity, and let yourself respond kindly
Day 29 · Month One Stocktake 15 min
Before the first milestone, you take stock. One month in, you have practised noticing energy, steadiness, and fullness. Today you read the month back.
- Read back your week reviews from the first month
- Write two sentences on what, if anything, has shifted in what you notice
Day 30 · Camp I Reached 20 min
One month complete. You have practised reading your body's signals: energy after meals, steadiness between them, and fullness. Month two brings in the everyday levers, movement, timing, and sleep, still as awareness rather than rules.
- Read back your day-one audit and your month-one stocktake
- Write two sentences on what, if anything, has changed in what you notice
- Confirm the one signal you carry into month two
Month 2 — Optimisation · Days 31–60
Notice the everyday levers, movement, meal timing, and sleep, as awareness rather than rules
Week 5Movement and Blood SugarDays 31–37
Day 31 · Move After a Meal 10 min
A short walk after eating is a gentle way to notice movement's effect on how you feel. Today you try one.
- Take a short walk after one meal today
- Note how your energy felt afterward compared with sitting
Day 32 · Notice the Difference 10 min
Research links activity with better blood-sugar handling, even a single bout. Today you notice the difference for yourself.
- Compare how you felt after a meal you moved after with one you did not
- Note any difference in energy or cravings
Day 33 · Movement Through the Day 10 min
Long stretches of sitting are worth noticing. Today you watch how much you sit.
- Notice the longest stretch you sat without moving today
- Break up one long sit with a minute of movement
Day 34 · Movement and How You Feel 10 min
A little movement can shift your mood and energy, separate from eating. Today you notice movement's effect on how you feel, with no rule attached.
- Notice how a short walk or stretch changed your mood or energy today
- Note that movement can be its own kind of reset
Day 35 · Match Movement to Energy 10 min
Matching activity to how you feel is part of listening to your body. Today you notice the fit.
- Notice how your energy matched or mismatched your activity today
- Note when movement lifted your energy rather than draining it
Day 36 · Small Movements Count 10 min
You do not need a workout plan for movement to matter. Today you notice the small movements.
- Add one small movement, a walk, some stairs, a stretch, to your day
- Note that small, regular movement counts
Day 37 · Week Five Review 15 min
A week noticing how movement affects how you feel after eating. Today you read it back.
- Read back your notes on movement and blood sugar
- Write one sentence on where moving changed how you felt
Week 6Timing and the Body ClockDays 38–44
Day 38 · When You Eat 10 min
The timing of meals, not only their content, interacts with your body clock. Today you notice your pattern.
- Notice the spread of your meals across today, first bite to last
- Note whether the pattern felt natural or forced
Day 39 · Late-Night Eating 10 min
Eating close to bedtime can sit differently than eating earlier. Today you notice how late food feels.
- Notice how a late meal or snack affected your night
- Note any effect on your sleep or morning hunger
Day 40 · The Weight of the Evening 10 min
Reviews suggest the body is generally better prepared for food earlier in the day. Today you notice how your evenings feel, without imposing a schedule.
- Notice how you feel when more of your eating lands earlier versus later
- Note which felt easier for you, as your own observation
Day 41 · Your Body Clock 10 min
You have a natural daily rhythm of energy and hunger. Today you notice yours.
- Notice when in the day you feel most and least hungry
- Note whether your eating follows or fights that rhythm
Day 42 · Timing and Sleep 10 min
Meal timing and sleep influence each other. Today you notice the link.
- Notice whether when you eat affects how you sleep
- Note one small timing change that seemed to help your sleep
Day 43 · A Consistent Rhythm 10 min
A roughly regular rhythm can be steadier than a chaotic one, without needing to be strict. Today you notice your regularity.
- Notice how consistent your meal and sleep times are day to day
- Note whether more regular days feel steadier
Day 44 · Week Six Review 15 min
A week noticing how timing and your body clock affect you. Today you read it back.
- Read back your notes on timing and the body clock
- Write one sentence on how timing seems to affect your energy and sleep
Week 7Sleep and MetabolismDays 45–51
Day 45 · The Day After Short Sleep 10 min
A small study of healthy young men found a stretch of short sleep changed hunger and blood-sugar handling, though the effect varies between people. Today you notice the day after a short night.
- When you wake, rate your energy as low, medium, or high, then notice whether your hunger and cravings are different after a short night
- Note how a short night shows up in your appetite
Day 46 · Sleep and Cravings 10 min
Short sleep is linked with more hunger and shifting appetite. Today you watch that link.
- Notice whether tired days bring stronger cravings for you
- Note what you tend to reach for when under-slept
Day 47 · Protect the Sleep Window 10 min
A consistent sleep time is a gentle habit that supports metabolic steadiness. Today you protect one window.
- Aim for a consistent bedtime tonight, protecting the wind-down
- Note how protecting sleep felt
Day 48 · Tired Eating 10 min
Eating when exhausted often follows the tiredness rather than the body needing food. Today you notice it, kindly.
- Notice one time you ate mainly because you were tired
- Note that the fix is often rest, not restriction
Day 49 · Sleep as Metabolic Care 10 min
Protecting sleep is part of caring for your metabolism, not separate from it. Today you reframe it that way.
- Count one act of protecting your sleep as metabolic care today
- Note how that reframe changes its priority
Day 50 · Your Sleep-Hunger Link 12 min
By now you may see how your sleep and hunger connect. Today you name the link.
- Describe how your sleep affects your hunger and eating the next day
- Note one thing that protects both
Day 51 · Week Seven Review 15 min
A week noticing how sleep shapes hunger and steadiness. Today you read it back.
- Read back your notes on sleep and metabolism
- Write one sentence on how sleep affects your eating
Week 8Putting the Signals TogetherDays 52–60
Day 52 · Energy and Protein 10 min
The signals connect: a filling meal often steadies energy. Today you notice the pair together.
- Notice how a filling, balanced meal affected both hunger and energy
- Note how the two signals moved together
Day 53 · Movement and Steadiness 10 min
Movement and steady energy tend to travel together. Today you notice the link.
- Notice how moving after a meal affected your steadiness
- Note whether the two lined up for you
Day 54 · A Full Picture Day 12 min
Today you watch all the signals for one day, energy, hunger, movement, timing, sleep, as a whole picture.
- Across one day, rate your energy, hunger, and mood as low, medium, or high after each main meal and at bedtime
- Note which signal was loudest today
Day 55 · Same Day, Refined 10 min
Reflecting on a full-picture day sharpens what you notice next. Today you refine your attention.
- Revisit yesterday and note which signal you want to watch more closely
- Note one small thing you might do differently
Day 56 · Notice, Adjust, Notice 10 min
Awareness works as a loop: notice, make a small change, notice again. Today you run one loop.
- Make one small, gentle change based on a signal, then notice its effect
- Note what the loop told you
Day 57 · Which Signal Is Loudest? 10 min
Different people's clearest signal differs. Today you identify yours.
- Name the metabolic signal that speaks most clearly to you
- Note how you might use it day to day
Day 58 · Phase Two Stocktake 15 min
Two-thirds of the way in, you take stock. You have added movement, timing, and sleep to your awareness. Today you read the phase back.
- Read back your reviews from month two
- Write two sentences on what has changed in what you notice since month one
Day 59 · Your Awareness Toolkit 12 min
Before the milestone, you name the signals you will keep watching. Today you write them down.
- Write your metabolic signals as a short list you can check in with
- Confirm each is something you can notice, not a rule to obey
Day 60 · Camp II Reached 20 min
Two months complete. You have practised noticing your energy, fullness, movement, timing, and sleep, and how they connect. Month three applies this awareness in real life and makes it a gentle, lasting habit.
- Read back your reviews from month two
- Write two sentences on what, if anything, has changed
- Confirm the signals you carry into month three
Month 3 — Mastery · Days 61–90
Carry the awareness into real life and make it a gentle, lasting habit
Week 9Awareness in Real LifeDays 61–67
Day 61 · Eating Out 10 min
Awareness travels with you, including to restaurants. Today you notice your signals when eating out, without rules.
- When eating out, notice how the meal left you feeling
- Note what you would want to notice next time
Day 62 · Holiday and Celebration Eating 10 min
A celebration meal or occasion tests your awareness under social pressure without restricting. Today you prepare for one with a single light intention.
- Before a celebration or holiday meal, name the one signal you will check in with, not to restrict, but to stay aware
- Afterward, note what you noticed and what you chose to let pass without guilt
Day 63 · Social Meals 10 min
Shared meals are for connection first; awareness can sit lightly alongside. Today you hold both.
- At a social meal, enjoy it and notice your fullness gently
- Note that awareness need not spoil the pleasure
Day 64 · Shift-Work and Schedule Disruption 10 min
Shift work, an early flight, or an unusual schedule disrupts your timing and sleep together. Today you plan one anchor to keep your signals readable.
- Name the one small anchor, such as a consistent meal time or a short walk, that keeps your signals readable when the schedule shifts
- Write a one-line return plan for the day after the disruption
Day 65 · An Off-Routine Meal 10 min
A meal outside your usual pattern is information, not a failure. Today you meet one without guilt.
- After an off-routine meal, notice how you feel, with curiosity not blame
- Note that one meal is data, not a verdict
Day 66 · Illness and Recovery 10 min
Illness changes appetite and energy signals dramatically. The skill is reading them without forcing normal, and returning gently as you recover.
- When unwell or recovering, notice whether hunger returned before your energy or after, as a signal of recovery
- Note the one first gentle step back to your usual eating pattern, without rushing it
Day 67 · Week Nine Review 15 min
A week carrying awareness into real life, out, busy, social, disrupted. Today you read it back.
- Read back your notes on awareness in real life
- Write one sentence on what stayed steady when life did not
Week 10Applying It to Your DaysDays 68–74
Day 68 · Choose One Signal to Watch 12 min
Now you point the whole practice at one signal that matters most to you. Today you choose it.
- Choose the one metabolic signal you want to keep watching
- Write down why it matters to you
Day 69 · Notice Where You Are 10 min
Applying it starts with an honest read of where that signal sits now. Today you check it.
- Notice honestly how your chosen signal has been lately
- Note what it seems to depend on
Day 70 · Make One Small Change 12 min
A signal improves through one small, sustainable change, not an overhaul. Today you make one.
- Make one small change guided by your signal, such as a walk after dinner
- Note how the signal responded
Day 71 · Let the Signal Guide You 10 min
The point of awareness is to let the signal, not a rule, guide small choices. Today you follow it once.
- Let your chosen signal guide one eating or movement choice today
- Note how it felt to be guided by your body rather than a rule
Day 72 · Watch What Shifts 10 min
Watching how a change lands keeps the practice honest and gentle. Today you observe.
- Notice how your small change affected how you feel over a few days
- Note one thing worth keeping
Day 73 · Review Honestly 12 min
Honest, kind review keeps awareness from turning into pressure. Today you look without judgement.
- Look at how your chosen signal has moved, without grading yourself
- Note one gentle next step
Day 74 · Week Ten Review 15 min
A week applying awareness to one real signal in your days. Today you read it back.
- Read back your notes on applying it to your days
- Write one sentence on what the small change moved
Week 11Sustaining the AwarenessDays 75–81
Day 75 · Awareness Without Obsession 10 min
Healthy awareness is light and curious, not anxious or controlling. Today you check that yours stays gentle.
- Notice whether your attention to food feels curious or anxious
- If it has tipped toward pressure, ease off and keep it kind
Day 76 · The Signals You Keep Watching 10 min
You cannot watch everything forever; a few signals are enough. Today you choose the ones to keep.
- Choose the one or two signals worth keeping an eye on long-term
- Let go of tracking the rest
Day 77 · A Habit That Sticks 10 min
A small habit you will actually keep beats a strict plan you will drop. Today you pick a sticky one.
- Choose one small habit, like moving after a meal, that you can keep
- Note why this one is sustainable for you
Day 78 · When Life Disrupts It 10 min
Life will disrupt any routine; the skill is returning without drama. Today you plan the return.
- Write one line on how you will return to your basics after a disruption
- Note that returning gently is the whole skill
Day 79 · Gentle, Not Strict 10 min
The steadiest relationship with food is gentle rather than rigid. Today you practise flexibility.
- Let one small deviation pass without guilt or compensation
- Note that flexibility is part of a healthy approach
Day 80 · Share What You Noticed 12 min
Putting what you have learned into words for someone else clarifies it. Today you share one thing.
- Tell someone one thing you have learned to notice about your body
- Note any part you found hard to explain
Day 81 · Week Eleven Review 15 min
A week making the awareness gentle and sustainable. Today you read it back.
- Read back your notes on sustaining the awareness
- Write one sentence on what will keep it kind and alive
Week 12Integration & IdentityDays 82–90
Day 82 · One Signal That Stays 12 min
Ninety days leaves you with more than you will track daily. Today you choose the one signal worth keeping for good.
- Choose the single signal that has served you best
- Check in with it once today
Day 83 · Awareness Across Contexts 12 min
This awareness can travel to other parts of how you care for yourself. Today you extend it gently.
- Apply the same gentle noticing to another area of self-care
- Note what carried over
Day 84 · Keep It Gentle 10 min
The practice stays healthy only as long as it stays kind and free of rigid rules. Today you reaffirm that.
- Notice any drift toward rules or guilt, and return to gentle noticing
- Reaffirm that awareness is meant to serve you, not rule you
Day 85 · Your Relationship With Food 10 min
How you eat is part of how you live, not a test to pass. Today you consider the relationship.
- Write down how you would want your relationship with food to feel
- Name one habit that moves you toward it
Day 86 · A Body You Listen To 10 min
The heart of this programme is listening to your body's signals. Today you honour that.
- Write one line on what your body has been telling you these ninety days
- Note one signal you now trust more than a rule
Day 87 · Plan the Next 90 Days 12 min
The awareness continues past day ninety. Today you write a simple, gentle plan for keeping it.
- Write down which signals and small habits you will keep
- Choose the one you will focus on next
Day 88 · Someone Who Notices 10 min
By now noticing is becoming part of how you live. Today you consider the person you are becoming.
- Write one line on who you are becoming in how you care for your body
- Name one thing you now do differently than on day one
Day 89 · Summit Review 15 min
Almost there. Today you read the whole ninety days back, from the first audit to now.
- Read back your day-one audit and your milestone stocktakes
- Write one sentence on what, if anything, has changed in what you notice
Day 90 · Summit Reached 25 min
Ninety days complete. You have practised listening to your body's metabolic signals, energy, fullness, movement, timing, and sleep, gently and without rigid rules, each grounded in published research. What has become part of how you live is for you to say.
- Read back your day-one audit, your two stocktakes, and this week
- Write one sentence on what, if anything, has changed in what you notice
- Choose the one signal and one small habit you keep past day ninety
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.
Blood Sugar Awareness
Blood sugar rises and falls after you eat, and how much it moves varies a great deal from person to person. Using continuous glucose monitors, researchers found healthy people fall into different patterns of glucose response, which they called glucotypes. A separate large study found the same meal could produce very different blood-sugar responses in different people. This programme is about noticing your own patterns, energy, cravings, steadiness, rather than following a single rule that ignores those differences.
DOI: 10.1371/journal.pbio.2005143
- Zeevi et al., 2015 — A large study found that the same food produced very different blood-sugar responses in different people, so individual responses vary rather than following one universal rule. doi:10.1016/j.cell.2015.11.001
Metabolic Flexibility
A healthy metabolism can switch between fuels, drawing more on carbohydrate after a meal and more on fat between meals or during activity. Reviews describe this metabolic flexibility as a feature of metabolic health, and its blunting as a feature of metabolic disease. You cannot see it directly, but you can notice related everyday signals, steady energy, comfort between meals, so this programme builds awareness of those rather than chasing a single number.
DOI: 10.1016/j.cmet.2017.04.015
- Smith et al., 2018 — A review described metabolic flexibility as the body's ability to adapt fuel use to what is available and what is needed, and reduced flexibility as linked with metabolic disease. doi:10.1210/er.2017-00211
Timing and the Body Clock
Your body handles food differently at different times of day, following an internal clock. Reviews of circadian metabolism describe the body as generally better prepared to handle food during its active daytime hours, and a controlled laboratory study found that experimentally misaligning sleep and eating with the internal body clock produced adverse metabolic and cardiovascular effects in healthy adults. This programme invites you to notice how timing affects your own energy, not to follow a strict eating schedule.
- Scheer et al., 2009 — A laboratory study found that misaligning behaviour with the internal body clock produced adverse metabolic and cardiovascular effects in healthy adults. doi:10.1073/pnas.0808180106
Protein and Fullness
Different foods affect hunger differently, and protein tends to produce stronger feelings of fullness than a similar-sized serving of carbohydrate or fat. A review and controlled studies found that higher-protein meals were associated with greater fullness, and in some studies with eating less later in the day. This is offered here as awareness, noticing how the makeup of a meal affects your own hunger, not as a diet to follow or a protein target to hit.
- Weigle et al., 2005 — In a study, meals higher in protein were associated with sustained reductions in appetite and in how much people chose to eat. doi:10.1093/ajcn/82.1.41
Movement and Blood Sugar
Moving your body changes how it handles blood sugar. A review found that physical activity was associated with improved insulin sensitivity, how well the body responds to the hormone that manages blood sugar, and that in some studies, a single bout of activity was linked with better blood-sugar readings in the hours that followed. Broader guidance describes regular movement as part of metabolic health. This programme builds awareness of the link between moving and how you feel after meals, rather than prescribing an exercise plan.
DOI: 10.1136/bmjsem-2016-000143
- Colberg et al., 2016 — A position statement summarising the evidence describes regular physical activity as supporting blood-sugar control and broader metabolic health. doi:10.2337/dc16-1728
Sleep and Metabolism
Sleep and metabolism are linked more closely than they seem. A small controlled study (eleven healthy young men, sleep restricted to four hours for six nights) found that a stretch of short sleep impaired their handling of blood sugar, and another found short sleep was associated with lower levels of the fullness hormone leptin, higher levels of the hunger hormone ghrelin, and more hunger. Poor sleep appears to nudge appetite and blood-sugar control in unhelpful directions. This programme approaches protecting sleep as part of metabolic awareness.
DOI: 10.1016/s0140-6736(99)01376-8
- Spiegel et al., 2004 — A study found that curtailed sleep in healthy young men was associated with reduced leptin, raised ghrelin, and increased hunger and appetite. doi:10.7326/0003-4819-141-11-200412070-00008
Safety & fit
This 90-day protocol is a structured, educational programme in metabolic awareness — it is not medical advice, a diet, or a substitute for professional guidance, and it prescribes no foods, doses, or eating schedules. If you have an existing metabolic condition, or any concern about your eating or relationship with food, please consult a qualified professional. Every framework it draws on is referenced to peer-reviewed literature for educational context only.
Questions, answered
How much time does this take?
The Metabolism Protocol runs 90 days across 12 themed weeks. Each day asks for between 10 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; Lowering the bar; Holding steady; Building on it; 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 6 evidence frameworks — 12 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.
- deep-dive Metabolic Flexibility: The Science The fuel-switching research this programme is built on.
- glossary Metabolic Flexibility The core term, defined.
- glossary Insulin Resistance What it means and why it matters for energy stability.
- glossary Mitochondria The cellular machinery your metabolism runs on.
- article CGMs for Non-Diabetics The evidence on continuous glucose monitoring outside diabetes.
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.
