What is the primary function of carbohydrates during high-intensity exercise?

The primary function of carbohydrates during high-intensity exercise is to supply quick energy. Carbohydrates are stored in the body primarily as glycogen in the muscles and liver. During high-intensity activities, such as sprinting or heavy lifting, the demand for energy increases rapidly. Carbohydrates can be metabolized quickly to produce glucose, which is then used for immediate energy needs through anaerobic and aerobic pathways.

Unlike fats, which take longer to break down, carbohydrates provide a fast source of fuel that can effectively meet the energy demands of intense exercise. This quick energy release is essential for sustaining performance during activities that require bursts of power and speed. Thus, the role of carbohydrates as a primary energy source makes them critical for athletes and individuals engaging in high-intensity workouts.