Fuel — Body & Brain Plan
Your brain is your grade. Feed it, sleep it, move it.
PERFORMANCE = MEMORY × EXECUTION × PHYSIOLOGY
If one collapses, the other two won't save you. Physiology is the part most students ignore. It's also the cheapest win — you don't need to learn anything new, you just have to stop self-sabotaging.
01 · Sleep Protocol
The single highest-ROI thing you can do. Sleep is when memories consolidate — re-reading notes on poor sleep is just moving your eyes across a page.
The non-negotiables
- 8–9 hours per night, measured. Not guessed.
- Lights out by 22:30 on weeknights. Later on Fri/Sat only.
- Fixed wake time of 06:30 — even weekends. Max 1 hour drift.
- No screens in bed. Book or nothing.
- No caffeine after 14:00.
- No heavy food after 20:30.
Why it matters
- Sleep is when memories consolidate. Re-reading notes without sleep = wasted time.
- Poor sleep drops IQ by measurable points — like sitting an exam drunk.
- One bad night before an exam is worse than skipping a revision session.
The recovery rule. If you've had a bad night (under 6 hours), you get ONE coffee in the morning, a light session in the afternoon, and an early bedtime. You do NOT try to catch up by cramming.
The pre-exam sleep rule. The goal is not one perfect night before the exam. The goal is a great week of sleep leading in. Don't "prepare" for the exam by trying to sleep perfectly on the last night — you'll fail. Just keep the routine.
02 · Hydration Protocol
Daily targets
- 2–3 litres of water per day (~8-12 glasses)
- 500ml on waking — BEFORE coffee or breakfast
- Glass of water with every meal
- Continuous sipping during study sessions — bottle on the desk
Why it matters
- Mild dehydration (1–2%) reduces concentration, reaction time, and short-term memory.
- Your brain is 75% water. Dehydration is stupid tax.
Exam day hydration
- 500ml on waking
- 500ml with breakfast
- Small sips only in the 30 minutes before the exam — don't overdo it, you don't want to leave mid-paper
- Take water into the exam if permitted
Not water. Milk and tea count as hydration. Coffee counts but caffeine has to stop at 14:00. Energy drinks do not count — they're sugar bombs with stimulants.
03 · Nutrition Protocol
The core rule. Stable blood sugar beats "brain foods". Your goal isn't a bodybuilder plate — it's steady energy for 12+ hours per day across 5 weeks of exams.
Every meal needs
- Protein (25–40g) — eggs, chicken, fish, Greek yoghurt, beef, lentils, beans
- Slow carbs — oats, wholemeal bread, brown rice, sweet potato, wholegrain pasta, lentils
- Colour — fruit or veg at every meal
- Fat — nuts, seeds, olive oil, avocado, cheese, fatty fish
Daily structure
BreakfastWithin 30 min of waking — protein + slow carbs + fruit
Mid-morningYoghurt, nuts, fruit
LunchProtein + carbs + veg, not greasy
Mid-afternoonHandful of nuts, fruit, or yoghurt
DinnerBy 20:00 — protein + carbs + veg
Late snackOnly if studying late. Light, no sugar spike
Foods that ruin performance
✗ Kill the brain
- Energy drinks (sugar crash → cognitive crash)
- Big sugary cereals (spike then crash 90 mins later)
- Crisps & fast food (bloating, sluggishness)
- Heavy carb-heavy lunches (post-lunch slump)
- Alcohol (destroys sleep quality for 2–3 nights)
✓ Feed the brain
- Oats, eggs, Greek yoghurt, berries
- Chicken, fish, lean beef, lentils, beans
- Nuts, seeds, avocado, olive oil
- Wholegrains, sweet potato, brown rice
- Water, milk, tea
04 · 7-Day Meal Template
Realistic, affordable, easy to prep or buy. Rotate this or adapt it — the pattern matters more than the exact meals.
Day 1 · Monday
- BreakfastPorridge with milk + blueberries + walnuts + a boiled egg
- SnackBanana + Greek yoghurt
- LunchChicken wrap + apple + glass of milk
- SnackHandful of nuts + an orange
- DinnerSalmon + roast potatoes + broccoli
- LateWholemeal toast + peanut butter
Day 2 · Tuesday
- Breakfast2 eggs + wholemeal toast + berries
- SnackGreek yoghurt with honey
- LunchTuna sandwich + fruit + water
- SnackDark chocolate (2 squares) + almonds
- DinnerChicken + sweet potato + green veg
- LateApple + cheese
Day 3 · Wednesday
- BreakfastGreek yoghurt + oats + berries + seeds
- SnackApple + peanut butter
- LunchRice bowl with chicken or beef + roasted veg
- SnackYoghurt drink + banana
- DinnerPasta with lean mince + side salad
- LateWholemeal toast + jam
Day 4 · Thursday
- BreakfastPorridge + banana + walnuts + honey
- SnackOrange + handful of cashews
- LunchEggs + avocado + wholemeal toast + fruit
- SnackDark chocolate + almonds
- DinnerWhite fish or salmon + rice + veg
- LateYoghurt with berries
Day 5 · Friday
- Breakfast2 eggs + wholemeal toast + berries + OJ
- SnackGreek yoghurt + honey
- LunchChicken sandwich + fruit
- SnackOat bar + apple
- DinnerBeef + potatoes + green veg
- LatePeanut butter toast
Day 6 · Saturday (bigger breakfast)
- BreakfastOvernight oats + berries + peanut butter
- SnackApple + cheese
- LunchPasta salad with chicken or tuna + veg
- SnackGreek yoghurt + nuts
- DinnerChilli with rice OR jacket potato with beans
- LateDark chocolate + fruit
Day 7 · Sunday
- BreakfastEggs on toast + grilled tomatoes + mushrooms
- SnackFruit smoothie (banana + berries + milk + oats)
- LunchHomemade soup + bread + cheese OR roast dinner
- SnackNuts + yoghurt
- DinnerRoast-style meal OR tray bake
- LateToast + honey
Prep rule. Batch cook on Sunday evening — rice, chicken, roast veg — to kill decision fatigue during the week. Put it in containers. Eat it.
Weekly shopping list
Protein
- Eggs (×12)
- Chicken breast
- Salmon or white fish
- Lean mince (beef)
- Tuna (tinned)
- Greek yoghurt (big tub)
- Milk (2–4L)
- Cheese
- Tinned beans / lentils
Carbs
- Porridge oats
- Wholemeal bread
- Brown rice
- Wholegrain pasta
- Sweet potatoes
- Potatoes
- Wraps / pittas
- Oat bars
Fruit & veg
- Bananas
- Apples
- Oranges
- Berries (fresh or frozen)
- Broccoli
- Green veg (spinach, peas)
- Tomatoes
- Mushrooms
- Avocado
- Salad leaves
Fats & extras
- Walnuts, almonds, cashews
- Peanut butter
- Seeds (pumpkin / chia)
- Olive oil
- Dark chocolate (85%)
- Honey
- Jam
05 · Supplement Protocol
Principle. Sleep + food + hydration first. Supplements are a bonus, not a substitute. For a healthy 17-year-old, nothing on this list is essential — but some are proven to help under exam conditions.
Tier 1Strongest evidence · cheapest · safe
| When | What | Dose | Why & notes |
|---|
| Morning with breakfast (oats preferred) |
Creatine monohydrate |
5g |
Memory, learning, cognitive performance under stress. Take with carbs — insulin drives muscle AND brain uptake. Don't skip days, it builds saturation over 2–3 weeks. Start now. |
| Daily with a meal |
Omega-3 (fish oil) |
1–2g EPA+DHA |
Mood, cognition, anti-inflammatory. A simple capsule, or 2–3 servings of oily fish per week. |
| Daily with food |
Vitamin D3 |
1000–2000 IU |
Mood, immune, almost universal UK deficiency. Especially in winter and early spring. |
Tier 2Exam day only · test in mocks first
| When | What | Dose | Why & critical rules |
|---|
| T-45 mins before a paper |
Caffeine |
100mg (1 small coffee or 1 tablet) |
Alertness, reaction time, focus. Stop ALL caffeine after 14:00. Never have your first-ever dose on exam day. |
| T-45 mins before a paper |
L-theanine |
200mg |
Takes the edge/jitter off caffeine, promotes calm focus. Best taken with the caffeine. Tastes like nothing. |
| Evening (optional) |
Magnesium glycinate |
200–400mg |
Sleep quality if struggling. Only if sleep is an issue. Don't need it otherwise. |
Exam day stack (confirmed)
06:30Water (500ml)
07:00Breakfast: oats + eggs/Greek yoghurt + berries + creatine 5g in the oats
07:30Walk / movement, light stretch
T-45Caffeine 100mg + L-theanine 200mg
T-15Water sip, loo, breathing (4-7-8 × 4)
PostWater, food, walk. No post-mortem.
What NOT to take — the snake oil list
✗ Don't bother
- NAD+ boosters — no evidence for exam prep, expensive
- Nootropic stacks (alpha-GPC, racetams) — unregulated, variable quality
- Pre-workout (Bang, C4) — too much caffeine, sugar alcohols wreck digestion
- Energy drinks — see pre-workout
- Anything a fitness influencer sells
✗ Illegal / dangerous
- Adderall / modafinil without a prescription — illegal
- Any prescription stimulant you don't have a script for
- Exam boards drug test. Don't risk 5 weeks of work for one pill
The parent check. You're 17. Anything beyond creatine + omega-3 + vitamin D should be run past your dad first. Caffeine is fine but needs to be practised in mocks, not discovered on exam morning.
06 · Movement Protocol
Not for fitness gains. For brain performance.
Daily minimum
- 20–30 min walk (can be split)
- Morning sunlight within 30 min of waking — anchors your circadian rhythm
3–4 times per week
- 30–40 min harder workout — gym, run, sport, HIIT, anything that makes you sweat
- Keeps stress hormones in check
- Improves sleep quality
- Boosts cognitive function for ~2 hours after
On exam days. Light movement only — walk, stretch. Nothing that leaves you tired or sore. No gym sessions in the 18 hours before a paper.
07 · Stress & Recovery
Signs you're overdoing it
- Can't sleep despite being tired
- Irritable, short-tempered, low motivation
- Getting sick more often
- Memory worse, not better, despite more revision hours
- Appetite changes
If you see any 3 of those → recovery day. Non-negotiable.
Daily stress controls
- "Done list" (not to-do list) — write what you finished, not what's left
- 10 min of daylight outside, alone
- Talk to a parent or friend — not about revision
- Short walk between sessions
- Breathing exercises (4-7-8 × 4 rounds before bed)
Never cram stress out. If the wheels are coming off, the answer is NOT another hour of revision. The answer is a walk, a meal, a nap, and restarting fresh.
08 · Quick Reference Card
Screenshot this. Print it. Stick it on the fridge.
FUEL — Daily Checklist
☐500ml water on waking
☐Breakfast within 30 min (protein + slow carbs + fruit)
☐Creatine 5g with oats
☐Omega-3 + vitamin D
☐Glass of water with every meal
☐2L+ water total today
☐No caffeine after 14:00
☐Movement (20 min walk minimum)
☐Dinner by 20:00
☐No screens after 21:30
☐Lights out by 22:30
☐8 hours sleep
Exam Day Extras
☐Creatine in breakfast oats
☐Caffeine 100mg + L-theanine 200mg at T-45
☐No new food or drink experiments
☐Walk post-paper, no post-mortem
Hard rules
Do not
- Skip breakfast on exam days
- Try a new supplement on exam morning
- Drink energy drinks
- Cram with no sleep
- Train hard in the 18h before a paper
- Trust a fitness influencer's stack
Do
- Protect sleep like your grade depends on it (it does)
- Eat protein + slow carbs every meal
- Drink water before coffee
- Take creatine daily from now
- Walk every single day
- Practise the caffeine/theanine stack in mocks first