Carbohydrates serve a vital role in an athlete's diet by providing the necessary energy for high-intensity training and competition. They are the primary source of glucose, which fuels muscles during physical activities. Proper carbohydrate intake before and after workouts helps replenish glycogen stores, improving recovery and performance. Athletes often benefit from consuming complex carbohydrates, such as whole grains, fruits, and vegetables, for sustained energy. Balancing carbohydrate intake with protein and healthy fats is essential for maintaining optimal physical condition.