The fitness world spent years convincing people that eating protein within 30 minutes of training was the difference between muscle and wasted effort. That window idea shaped an entire supplement industry - shakers, ready-to-drink bottles, protein bars marketed as urgent post-workout interventions. Most of that urgency was overblown.
Research on protein timing has consistently shown that the so-called anabolic window is far wider than 30 minutes, likely extending several hours either side of a session. What matters considerably more is total daily protein intake. If you’re hitting your targets across the day, the precise clock at which you consume it has a modest effect at best.
The actual problem most people have isn’t timing - it’s that they’re not eating enough protein at all. Not even close. A common pattern is a light breakfast, a lunch that’s mostly carbohydrate, and then a dinner that carries most of the day’s protein load. That backloading isn’t catastrophic, but it’s also not optimal, and it usually signals that someone isn’t thinking about protein as a structured target - they’re just eating and hoping it works out.
What a Useful Daily Target Looks Like
For anyone doing regular resistance training, somewhere between 1.6 and 2.2 grams of protein per kilogram of bodyweight per day is a reasonable working range. Those numbers come from repeated reviews of the literature and aren’t particularly controversial at this point. A 75kg person is looking at roughly 120–165g daily - an amount that takes actual planning to hit consistently, not just an extra shake after the gym.
The planning part is where most people get unstuck. Protein requires deliberate sourcing at every meal. It doesn’t arrive by default the way carbohydrates do.
The Timing Piece Isn’t Worthless
Distributing protein across three or four meals rather than eating most of it in one sitting does appear to support muscle protein synthesis more effectively. So timing isn’t completely irrelevant - it’s just not the first problem to solve.
Get the total right first. Then spread it. Then, if you’ve done both of those things consistently for several months, you can start caring about the 30-minute window.
Most people optimising timing are doing so while running a significant daily deficit in overall intake - which is roughly the equivalent of obsessing over tyre pressure on a car that’s low on fuel. The sequence matters, and most people have it backwards.