What two nutrients supply most of the bodys energy during exercise?

During exercise, the two primary nutrients that supply most of the body's energy are carbohydrates and fats. Carbohydrates, stored as glycogen in muscles and the liver, provide a quick source of energy, especially during high-intensity activities. Fats serve as a major energy source during lower-intensity, prolonged exercise. The body utilizes these nutrients based on the intensity and duration of the activity.