The Moveee team
Free coaching · a real route for every ride
Somewhere along the way, cycling absorbed a rule from the gym: drink a protein shake within thirty minutes of finishing or the session is wasted. It is a tidy idea, it sells a lot of powder, and the evidence for it is considerably weaker than the confidence with which it is repeated.
Here is the honest summary. Protein matters. The half-hour deadline mostly does not. What follows is the distinction between the two, and what a rider should actually do after a ride.
Where the anabolic window came from
Muscle protein synthesis is elevated after exercise, and feeding protein raises it further. That much is solid. The leap was assuming the effect is sharply time-limited — that the benefit falls off a cliff within an hour. When that assumption was tested directly, a meta-analysis of protein-timing studies found no significant effect of timing on strength or hypertrophy once total daily protein intake was controlled for. The apparent timing benefit in earlier work was largely a total-intake benefit in disguise: the groups eating protein straight after training were, over the day, simply eating more protein.
The window is better described as a door that stays open for hours rather than minutes. The sensitised period after a training session lasts most of a day. Riders who eat reasonably at regular intervals are inside it almost continuously.
Roughly 1.4–2.0 g per kg of body mass per day for someone training seriously. This is the variable with the best evidence behind it, and the one most riders get wrong.
Three or four servings of a reasonable size beat one enormous dinner. A controlled study found 20 g every three hours produced more muscle protein synthesis than the same total taken in very small or very large portions.
Sensible, easy to do, and it usually improves the day's total anyway. Just not the make-or-break moment it is sold as.
Meta-analysis found no meaningful effect of protein timing once total daily protein was accounted for. Walk home, have a shower, then eat.
The per-meal dose
Dose-response work suggests muscle protein synthesis after exercise is close to maximal at around 20 g of high-quality protein in young adults, with little extra gained from doubling it. Scaled to body mass, the commonly used figure is about 0.3 g per kg per meal, and some researchers argue for a little more after whole-body exercise or in older athletes. Treat these as rough landing zones rather than thresholds you either clear or fail.
| Body mass | Per meal (~0.3 g/kg) | Per day (1.4–2.0 g/kg) |
|---|---|---|
| 55 kg | 17 g | 77 g – 110 g |
| 65 kg | 20 g | 91 g – 130 g |
| 75 kg | 23 g | 105 g – 150 g |
| 85 kg | 26 g | 119 g – 170 g |
Cyclists are not just small bodybuilders
Most protein research is done on resistance training, which is not what you did on Sunday. Endurance exercise has its own demands: it oxidises some amino acids as fuel, and it drives remodelling of mitochondrial and other non-contractile proteins rather than simply building bigger muscle. Work using the indicator amino acid oxidation method has estimated protein requirements in endurance athletes to be meaningfully higher than the general population reference intake — in the region of 1.6–1.8 g/kg/day on training days in that study.
So the endurance case for protein is less about getting bigger and more about repairing and adapting between sessions, and about not losing muscle during heavy training blocks or any period of energy restriction. If you are riding a lot and eating little, protein is the last thing you should be cutting.
So — after every ride?
No. Here is a more useful rule.
- After an easy hour: nothing special required. Eat your next normal meal.
- After a long or hard session: have a mixed meal or snack containing 20–30 g of protein plus carbohydrate within a couple of hours. Carbohydrate is the more time-sensitive nutrient here if you are training again soon.
- If your next session is under about eight hours away: now timing does start to matter, mostly for glycogen. Eat promptly and include protein with it.
- Before bed after a big day: a protein-containing snack is a cheap way to lift the daily total, and some evidence suggests overnight protein is used well.
- Every day, regardless: hit the daily total. This is the part that actually moves the needle.
Greek yoghurt, 200 g 18–20 g
Two large eggs ~13 g
Chicken breast, 120 g ~35 g
Tin of tuna, 120 g ~26 g
Whey powder, one 30 g scoop ~24 g
Cooked lentils, 250 g ~22 g
Firm tofu, 200 g ~28 g
500 ml semi-skimmed milk ~17 g
Approximate values, rounded. Plant sources are generally lower in leucine, so plant-based riders may want slightly larger servings and a wider spread of sources across the day.
The intakes above are general guidance for healthy, well-trained adults. If you have kidney disease or any condition affecting protein metabolism, protein intake is a clinical decision and should be discussed with your doctor. Supplements are not required to reach any of these numbers — whole food does the job — and nothing here is a recommendation to take a particular product.
What this means in practice
Almost nobody needs to rush. If you finish a ride and the sensible thing is a shower and a coffee before lunch, do that. The riders who actually struggle with protein are not the ones missing a thirty-minute window; they are the ones eating 40 g in a day, most of it at dinner, while riding twelve hours a week and wondering why they feel permanently sore.
If you want a single habit: get protein into breakfast. It is the meal where riders most consistently fall short, and fixing it moves the daily total more than any post-ride shake will.
Recovery nutrition only makes sense alongside recovery in general — see recovery is training for the rest of it. If your training is structured, the useful signal is simply how much load is coming: when Moveee has a heavy block or a long weekend ride scheduled, that is the week to pay attention to what you are eating, not the thirty minutes after any one session.
Sources 7
Where this article summarises a study, the study itself is linked — not a write-up of it.
- 1 Schoenfeld BJ, Aragon AA, Krieger JW The effect of protein timing on muscle strength and hypertrophy: a meta-analysis · Journal of the International Society of Sports Nutrition · 2013
- 2 Morton RW, Murphy KT, McKellar SR, et al. A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults · British Journal of Sports Medicine · 2018
- 3 Moore DR, Robinson MJ, Fry JL, et al. Ingested protein dose response of muscle and albumin protein synthesis after resistance exercise in young men · The American Journal of Clinical Nutrition · 2009
- 4 Areta JL, Burke LM, Ross ML, et al. Timing and distribution of protein ingestion during prolonged recovery from resistance exercise alters myofibrillar protein synthesis · The Journal of Physiology · 2013
- 5 Kato H, Suzuki K, Bannai M, Moore DR Protein requirements are elevated in endurance athletes after exercise as determined by the indicator amino acid oxidation method · PLOS ONE · 2016
- 6 Jäger R, Kerksick CM, Campbell BI, et al. International Society of Sports Nutrition position stand: protein and exercise · Journal of the International Society of Sports Nutrition · 2017
- 7 Thomas DT, Erdman KA, Burke LM Position of the Academy of Nutrition and Dietetics, Dietitians of Canada, and the American College of Sports Medicine: nutrition and athletic performance · Medicine & Science in Sports & Exercise · 2016
A plan that knows how long tomorrow is
Moveee builds your week from your own rides and keeps it honest about duration and intensity — which is the number every fuelling decision on this page depends on. Free coaching, and it adapts when life gets in the way.
See your planKeep reading
The refuelling window: how real is it, and when does it matter?
The thirty-minute window is real, quite small, and almost irrelevant unless you are riding again tomorrow morning. What the research actually supports, the dose per kilogram, and the specific situations where the clock genuinely matters.
Eating for cycling after 40: what actually changes
Anabolic resistance means the same protein does less than it used to, glycogen comes back slower, and thirst stops being a reliable signal. What genuinely changes with age — and how much of "masters nutrition" is the same advice in a different font.
Beetroot juice, nitrates and cycling performance: does it work?
Dietary nitrate genuinely improves exercise economy in some people — and does close to nothing in well-trained athletes. What the research shows, the dose and timing that matter, and the mouthwash mistake that cancels the whole thing.
Creatine for cyclists: useful, or just extra weight?
Creatine is the most researched supplement in sport, but almost all of that research is about lifting and sprinting. What it does for a cyclist, what the water weight costs your watts per kilo, and who it actually suits.
Your gut bacteria and your riding: what the research can and can't say yet
Endurance athletes really do have different gut microbial profiles, and no probiotic on a shelf has been shown to make you faster. Separating the genuinely interesting findings from the marketing built on top of them.
What to eat before a morning ride (and when there's no time)
What to eat before a 6 am ride, how long it really needs to settle, and what to do when you've got twenty minutes and no appetite. Including whether eating half an hour before genuinely causes a blood-sugar dip.
Recovery drinks: do you need one, or is a meal enough?
Rapid refuelling matters enormously when you're riding again in six hours, and barely at all when you're not. How glycogen resynthesis actually works, and when a recovery drink beats a plate of food.
Fuelling six days back to back
On one long ride, fuelling decides how you feel at the end. On six consecutive long rides it decides whether the week produces fitness at all. The daily rhythm, four traps, and why day four feeling grim is often a food problem wearing a training problem's clothes.
Cycling and alcohol: what one beer actually costs you
Alcohol interferes with glycogen storage, muscle repair and — most reliably of all — sleep. An honest look at what the evidence supports, where the dose stops mattering much, and where it really doesn't.
Caffeine for cyclists: how much, how long before, and the catch
Caffeine is one of the few supplements with genuinely strong evidence behind it. The effective dose, when to take it, why habitual coffee drinkers still respond — and what it costs your sleep if you time it badly.
Vitamin D for cyclists: a strong case, narrower than the marketing
One of the few supplements with real evidence behind it — and that evidence says something the labels do not. Why cyclists are a higher-risk group, what correcting a deficiency does, and what topping up when you are already fine does not.
Cycling cadence: does it actually matter? What the science says
The internet is full of one true cadence — the research says your legs already found theirs. What the science honestly shows about self-selected cadence, when deliberate high or low RPM work genuinely helps, the typical ranges by situation, and the drills worth folding into an easy hour.