During physical activity, the body primarily utilizes carbohydrates for energy, especially during high-intensity exercise. Glycogen, the stored form of carbohydrates in muscles and the liver, serves as a quick energy source. While fats are also utilized during prolonged exercises, carbohydrates are crucial for fueling intense workouts and maintaining performance levels. Adequate carbohydrate intake before and after exercise is important for optimizing energy levels, recovery, and muscle synthesis, enhancing overall athletic performance.