Pre- vs. Post-Workout Nutrition: Timing in Context
Evidence review updated: September 6, 2026.
Daily energy, protein, carbohydrate, and food quality matter more than a narrow “anabolic window.” Timing becomes more useful when sessions are long, intense, or repeated with only a few hours of recovery.
Before training, choose familiar foods that digest comfortably. Carbohydrate can support demanding endurance or high-volume work; protein before or after resistance exercise can support muscle protein synthesis. The exact meal size and timing depend on tolerance and how recently you ate.
After training, eat a normal meal containing protein and carbohydrate within a practical timeframe. Faster carbohydrate replacement matters most when another glycogen-demanding session follows soon. Otherwise, there is no need to race for a shake within 30 minutes.
During prolonged high-intensity exercise, carbohydrate and electrolytes may help. Short, ordinary gym sessions generally do not require sports drinks. Hydration should be individualized to heat, sweat rate, duration, and access to fluid.