The primary function of carbohydrates in relation to exercise is to serve as a key energy source for the body. Carbohydrates are broken down into glucose, which fuels physical activity, particularly during high-intensity and endurance training. They also play a vital role in muscle recovery post-exercise, replenishing glycogen stores that are depleted during prolonged exertion. Consuming adequate carbohydrates can enhance performance, delay fatigue, and support overall metabolic processes, making them essential for athletes and fitness enthusiasts.