The sports nutrition industry is built around the idea that what you eat immediately before and after training is critically important, important enough to require specific products, precise timing, and significant ongoing expense.
The reality is more nuanced. Peri-workout nutrition (the food consumed around training sessions) does affect performance and recovery. But it matters far less than total daily nutrition, and its importance is regularly overstated by the products designed to address it.
This article covers what the evidence actually says, stripped of marketing.
Pre-workout nutrition: what it does and does not do
The primary purpose of pre-workout nutrition is to support training performance, to ensure you have the substrate available to train at your best.
The two nutrients that matter most:
- Carbohydrates — provide glucose, which replenishes muscle glycogen and maintains blood glucose during training. Most relevant for sessions longer than sixty minutes or high-volume sessions where glycogen depletion becomes a real constraint. Less relevant for shorter strength sessions where glycogen depletion is unlikely in a single session.
- Protein — consuming protein before training raises circulating amino acid levels, which supports muscle protein synthesis during and after the session. Twenty to forty grams of protein in the pre-workout meal is sufficient.
Timing: a full meal two to three hours before training allows digestion to complete without discomfort. A smaller snack (carbohydrate plus protein) can be consumed thirty to sixty minutes before if a full meal is not possible.
Training fasted is not inherently harmful for most people, particularly for shorter, lower-intensity sessions. Performance may be slightly lower, but the difference is small and highly individual. If training fasted suits your schedule and feels fine, there is no compelling reason to change it.
Post-workout nutrition: the anabolic window revisited
The concept of the anabolic window, a thirty-minute period after training during which protein consumption is uniquely effective, was derived from early research that has since been substantially revised.
Current evidence shows that muscle protein synthesis is elevated for many hours post-training, not just the immediate post-session window. The total daily protein intake matters far more than whether you consumed protein within thirty minutes of finishing.
What is still true:
- Consuming protein within two hours of training is a sensible practice, not because the window is tight, but because the meal pattern that supports it (eating regularly throughout the day) also supports total daily protein targets.
- Post-workout carbohydrates meaningfully accelerate glycogen resynthesis. This is most important if you are training twice a day or with less than eight hours between sessions. For most recreational athletes training once per day, the glycogen replenishment that occurs over the subsequent 24 hours is sufficient.
- The post-workout shake is optional — if your next meal is within two hours of training, it is redundant. If your next meal is three or more hours away, a protein-containing snack post-training is a sensible precaution.
What a practical pre-workout meal looks like
Two to three hours before training:
- Rice with chicken and vegetables (carbohydrate + protein + micronutrients)
- Oats with milk and fruit (carbohydrate + moderate protein)
- Pasta with a protein source
Thirty to sixty minutes before training (if the full meal was not possible):
- A banana with Greek yoghurt
- Rice cakes with cottage cheese
- A protein shake with fruit
What a practical post-workout meal looks like
- Any balanced meal containing thirty to forty grams of protein and adequate carbohydrates
- The specific foods are irrelevant, chicken and rice is not uniquely superior to salmon and potatoes
- If a meal is not immediately available, a protein shake or Greek yoghurt provides the protein component while you prepare or travel
The nutrients that do not matter (peri-workout)
- BCAAs during training — if you are eating adequate total protein, BCAAs (branched-chain amino acids) as a supplement add no additional benefit. You already have circulating amino acids. BCAAs are useful in specific scenarios (training in a prolonged fasted state, calorie-restricted phases) but are not a meaningful addition for most people.
- Pre-workout stimulants — caffeine is the only stimulant with consistent performance evidence. It improves endurance, power output, and focus at three to six milligrams per kilogram of bodyweight. Everything else in a pre-workout supplement is largely unproven. Caffeine from coffee works just as well.
dotmoovs tracks your training sessions and performance so you can see how your nutrition choices affect your output over time. Download the app.
