Nutrient timing is dietary strategy whereby specific nutrients (usually protein &/or carbohydrates) are consumed in and around training. The post-exercise period is widely considered the most critical part of nutrient timing. Theoretically nutrient timing is designed to optimize the adaptive response to exercise – rebuilding damaged muscle tissue and restoring muscle glycogen reserves. It is considered this speeds recovery, improves performance, increases muscle hypertrophy and strength gains and improves body composition. It is believed that there may an “anabolic window” of opportunity, a short time after training where these improvements can be optimized if the right nutrients are consumed.