I suggest you drink pure milk, which is added with other substances, because it tastes better than pure milk, but its nutritional value is definitely not as good as pure milk, so I suggest you drink pure milk ~ Here are some relevant knowledge about milk ~ It is the best time to drink milk in the morning and evening, and drinking milk for breakfast provides sufficient nutritional guarantee for the vitality of the day; Drinking milk at night not only helps you sleep, but also helps your body absorb nutrients. According to the research of American and British medical experts, milk contains two hypnotic substances that were not known before. One of them is tryptophan synthesized by serotonin, which can promote sleep. Because of its function, people often only need a glass of milk to fall asleep. The other is natural morphine, which has similar anesthetic and sedative effects. Therefore, if you drink milk in the morning, it will inevitably inhibit people's cerebral cortex and affect work and study during the day. In addition, drinking milk in the morning is not conducive to digestion and absorption. This is because protein in milk can only be absorbed by human body after it is decomposed into amino acids in stomach and small intestine. In the morning, on an empty stomach, the stomach empties quickly, so the milk is discharged into the large intestine and has not been digested. Furthermore, protein absorbed in food can only form a part of human tissues on the basis of sufficient calories. If the heat is insufficient, the absorbed protein will soon become heat and be consumed, which is undoubtedly a waste of overqualified materials. Therefore, nutrition experts believe that it is best to drink milk at night or half an hour before going to bed.