Drinking plain milk is not fattening and will not affect weight loss. Because drinking milk in moderation makes the body what it needs and does not burden the body with excess calories. Therefore it will not lead to fat, drinking milk can promote absorption, the night is the best time for calcium digestion and absorption, it is recommended to drink milk in the afternoon to promote sleep, more emotional stability. The main component of milk is protein, which is not so quickly digested and absorbed, it is mainly digested in the small intestine, which also makes drinking milk before bedtime does not bring a greater burden of energy consumption at night. Milk has a lot of protein and vitamins, as well as trace elements and minerals, which are closely related to physical development and height development for adolescents.