The primary energy source used by the body during intense exercise is

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During intense exercise, the body relies primarily on carbohydrate as its energy source. Carbohydrates are broken down into glucose and stored as glycogen in the muscles and liver. When intense exercise begins, the muscles start breaking down glycogen to release glucose for energy. This process is known as glycogenolysis. As the intensity and duration of exercise continue, the body can also use fat as an energy source, but carbohydrates still play a critical role in fueling intense exercise. Protein and cholesterol are not primary energy sources for the body during exercise.

The Primary Energy Source Used by the Body During Intense