My Fuel Plan

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What to eat after training

Plenty of athletes stress about the famous 30-minute window when their training pattern makes it almost irrelevant — and neglect the parts of recovery that genuinely move the needle.

The short version

If you're training hard again within about 24 hours, refilling glycogen promptly genuinely helps and the first hour is the most efficient time. If your next hard session is two or three days away, what you eat across the whole day matters much more than what you eat in the first thirty minutes.

When the window actually matters

The "anabolic window" became gospel partly because it's easy to sell. The underlying science is real but narrower than the marketing: glycogen resynthesis is fastest in the first hour or so after exercise, when the muscle is most receptive to taking glucose up.

That speed advantage only matters if you need the glycogen back quickly. Concretely:

For most recreational athletes training three or four times a week, the third case is the one they're in — and the anxious dash for a shake in the changing room is doing very little.

Carbs and protein together

Carbohydrate refills glycogen; protein supports repair and adaptation. Roughly 20–25g of protein alongside your carbs is the usual guidance. What delivers it is not important:

There is nothing magic about powders. They're convenient and they travel well, which is a real advantage after a race when you're nowhere near a kitchen. That's the whole of their edge.

How much carbohydrate?

When rapid refuelling genuinely matters, guidance lands around 1–1.2g of carbohydrate per kilogram of body mass per hour for the first few hours. For a 70kg athlete that's roughly 70–85g an hour — a substantial meal plus a drink, not a snack. When it doesn't matter, eat normally and generously across the day and you'll get there comfortably.

Rehydration takes more than you lost

Drinking isn't perfectly efficient — some of what you drink passes straight through rather than being retained. Replacing around 1.25 to 1.5 times what you lost, spread over a few hours rather than all at once, restores you properly.

The part people miss is sodium. Including sodium in what you drink afterwards helps you retain the fluid rather than passing it. Plain water after a very sweaty session leaves you needing the toilet and still short. This is why a salty meal alongside your drinks does more for rehydration than a large glass of water on its own, and why recovery drinks aimed at endurance athletes contain sodium rather than just carbs and protein.

If you weighed yourself before and after the session, you have the number you need: each kilogram lost is about a litre of sweat, so a 1.5kg loss means roughly 1.9–2.3 litres to drink back over the following hours.

Alcohol, briefly

A beer after a race is not going to undo your training. But alcohol in meaningful quantity does blunt glycogen resynthesis and protein synthesis, and it works against rehydration. If you have another hard session tomorrow, that's worth knowing. If your next one is Thursday, enjoy it.

The overlooked part

Sleep does more for recovery than any supplement. Nutrition supports recovery; it doesn't replace it. An athlete eating imperfectly and sleeping eight hours recovers better than one with a meticulous post-session protocol and six broken hours. It's the least marketable advice in the sport, which is probably why it gets the least attention.

A simple default

If you want one rule rather than a decision tree: after a hard or long session, have a mixed meal containing carbohydrate and around 20–25g of protein within a couple of hours, drink about 1.5 times what you lost across the rest of the day, include some salt, and get to bed at a sensible hour. Tighten the timing only when you're training again inside 24 hours.

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My Fuel Plan works out what you used and what to replace — carbohydrate, protein, fluid and sodium — based on your actual session rather than a general rule.

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General information for healthy adults, not individual medical or dietary advice.