Chocolate milk has enough energy and nutrition and good fitness effect. Chocolate milk can help muscle reconstruction more than drinking sports energy drinks. Chocolate milk is rich in nutrients such as protein, carbohydrate, fat, vitamins and minerals, which can meet the energy demand of the body in the process of fitness and help to improve sports performance and restore physical strength. The proportion of protein and carbohydrate in chocolate milk is reasonable, which can provide long-term energy supply and help to reduce hunger after exercise and control diet. Some ingredients in chocolate milk can also promote muscle repair and growth, which is helpful to improve muscle quality and strength.