Intense exercise, especially if it is going to last several hours, requires a sufficient amount of carbohydrates in order to supply you with ample energy. Since we don’t store glycogen (blood sugar) in the same ratio that the body stores fat, it needs to be restored quickly. Drinking chocolate milk after strenuous exercise is one of the best ways to do this. The sugar in milk (lactose), its potassium and its protein combined with the extra carbohydrates in low fat chocolate milk provide the body with an excellent ratio of carbohydrates to protein which stimulates recovery. This is extremely useful if you are going from one strenuous activity to another. Maybe there is a reason why kids prefer chocolate milk.