The Best Foods to Eat Before and After Exercise

What you eat around your workout affects energy during it, recovery after it, and adaptation over weeks. Most people get one of three things right. Here is how to get all three.

Pre-workout and post-workout nutrition serve different purposes. Pre-workout nutrition fuels performance; post-workout nutrition drives recovery and adaptation. Both matter, but they work through different mechanisms and therefore require different strategies. Pre-workout carbohydrate timing is one of the better-supported interventions in sports nutrition.

Muscle glycogen — the stored form of carbohydrates in muscle tissue — is the primary fuel source for moderate-to-high intensity exercise. Starting a session with full glycogen stores allows you to train at higher intensity for longer before fatigue limits performance. The International Society of Sports Nutrition recommends consuming 1 to 4 grams of carbohydrate per kilogram of body weight 1 to 4 hours before exercise, with lower amounts and shorter time windows for lighter activity.

A pre-workout meal eaten 2 to 3 hours before training might be oatmeal with banana and Greek yogurt — approximately 60 to 80 grams of carbohydrates with moderate protein. A smaller snack 30 to 60 minutes before training might be a banana with a tablespoon of almond butter — fast-digesting carbs with minimal fat and fiber to prevent digestive discomfort during exercise. Protein before exercise also has value. A 2016 study in the Journal of the International Society of Sports Nutrition found that pre-workout protein consumption extended muscle protein synthesis throughout the workout itself, not just post-exercise.

This is because amino acids from the pre-workout meal are still being absorbed and circulated during the training session. Post-workout protein consumption drives muscle protein synthesis — the process of rebuilding and reinforcing damaged muscle fibers. Leucine, the branched-chain amino acid that acts as the primary trigger for muscle protein synthesis, must exceed a threshold of approximately 2.5 to 3 grams per meal to maximally stimulate the process. This is found in roughly 20 to 25 grams of high-quality protein: whey protein isolate, chicken breast, eggs, Greek yogurt, or tofu.

A 2022 systematic review in Nutrients found that protein intake within 2 hours post-exercise produced superior muscle recovery outcomes compared to consuming the same total daily protein without post-workout timing. Post-workout carbohydrates restore glycogen. For people exercising once daily at moderate intensity, glycogen fully restores within 24 hours on a normal diet — exact post-workout carbohydrate timing is less critical. For athletes training multiple sessions per day, post-workout carbohydrate timing becomes more important: 0.6 to 1 gram of carbohydrate per kilogram of body weight within 30 minutes of training, then again every 2 hours for 4 to 6 hours, is the research-backed protocol for rapid glycogen resynthesis. Hydration is often overlooked but has direct effects on performance and recovery.

Losing as little as 2 percent of body weight in sweat — roughly 1.2 liters for a 60-kilogram person — reduces endurance performance by 10 to 20 percent. Replacing fluid plus electrolytes (sodium, potassium, magnesium) is important after intense sessions. Weigh yourself before and after exercise; drink approximately 16 to 24 ounces of water per pound of body weight lost to rehydrate fully within 4 to 6 hours. The practical pre-workout meal: complex carbohydrates plus moderate protein, 2 to 3 hours before training (oatmeal + eggs, rice + chicken, whole grain toast + cottage cheese).

The practical post-workout meal: 20 to 40 grams of high-quality protein with moderate carbohydrates within 2 hours (Greek yogurt + fruit, chicken + rice, protein shake + banana).