Eating For Training: Start Here

Nutrition advice online is mostly noise, and almost all of it is arguing about the last 5%. If you are training seriously, four things account for nearly all of the result: eating roughly enough total food for what you are asking your body to do, getting enough protein, sleeping, and doing it consistently for months rather than days.

Everything after that — meal timing, which carbohydrate, whether you eat late, the order you put food in your mouth — is real but small. It is worth attending to once the four above are genuinely handled, and it is worth ignoring until then. Most people who feel stuck are not missing a trick; they are inconsistent about the basics and looking for a trick instead.

The guides that follow explain what the main nutrients do and roughly what the evidence says about how much of them people training tend to need. They are general ranges, not a plan for you. Bodyweight, training load, age, sleep, medication and medical history all move the numbers, which is why nobody honest gives you one figure and why we are not going to either.

One thing worth saying plainly, because the rest of this guide gives floors for individual nutrients and it would be easy to read those as a diet. Under-eating is the more common problem among people who train hard, not over-eating, and it does not announce itself as hunger. It shows up as lifts that stall for no reason, sleep that stops working, getting ill more often, feeling cold, losing interest in training, and — for women — periods becoming irregular or stopping, which is a reason to see a GP rather than to eat more carefully. If several of those are true at once, eating more is far more likely to be the answer than eating more precisely. Nothing in this guide is a reason to eat less.

And if counting any of this starts to feel compulsive, or food is becoming something to control rather than something to eat, stop using the numbers — they are not worth it, and they are not the point of any of this. In the UK, Beat runs free helplines and online support at beateatingdisorders.org.uk, and a GP is a reasonable first conversation. That is a better use of ten minutes than any macronutrient target on this page.