Poor nutrition can severely impact athletic performance by impairing energy levels, recovery, and overall health. Inadequate intake of essential nutrients can lead to fatigue, reduced endurance, and impaired muscle function. A lack of carbohydrates can severely hinder energy levels necessary for training and competition, while insufficient protein can slow muscle repair and growth. Furthermore, poor nutrition can increase the risk of injuries and illnesses, ultimately limiting an athlete's ability to perform at their best. Thus, maintaining a balanced diet is crucial for optimal performance in any athletic endeavor.