Carbohydrates play a crucial role in an athlete's diet as the body's primary source of energy. They are essential for fueling intensity and maintaining endurance during workouts and competitions. Complex carbohydrates, such as whole grains, fruits, and vegetables, provide sustained energy, while simple carbohydrates can be useful for quick recovery post-exercise. Balancing carbohydrate intake with proteins and healthy fats optimizes performance and recovery. Proper carbohydrate management can prevent fatigue and enhance overall athletic performance.