The significance of nutrient timing in athletic performance lies in optimizing energy levels and recovery. Consuming specific nutrients, like carbohydrates and proteins, around the time of intense exercise ensures that energy stores are replenished and muscle repair is accelerated. For example, having a carbohydrate-rich meal post-workout can enhance glycogen replenishment and minimize muscle breakdown. This careful scheduling of meals can significantly improve performance, increase energy, and reduce the risk of fatigue during training and competition.