Morning and evening are the best time to drink milk, and drinking milk at breakfast provides sufficient nutritional guarantee for the vitality of the day; Drinking milk at night will not only help you sleep, but also help your body absorb its nutrients. According to the research of medical experts in the United States and Britain, milk contains two kinds of hypnotic substances unknown to people in the past. One of them is tryptophan synthesized by serotonin, which can promote sleep. Because of its function, people often need only a glass of milk to fall asleep. The other is a natural morphine substance with similar anesthetic and sedative effects. Therefore, if you drink milk in the morning, it will inevitably inhibit people's cerebral cortex and affect their work and study during the day. In addition, drinking milk in the morning is not conducive to digestion and absorption. This is because the protein of milk can be absorbed by the human body only after it is decomposed into amino acids in the stomach and small intestine. In the morning on an empty stomach, the emptying of the stomach and intestines is very fast, so the milk is discharged to the large intestine before it can be digested. Furthermore, protein absorbed in food can only form a part of human tissues on the basis of sufficient heat. 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 in the evening or half an hour before going to bed. Milk is rich in nutrients, including not only essential amino acids, but also high-content and easily absorbed calcium. Long-term drinking is very beneficial to the body. However, you must pay attention to the way of drinking milk. The following are common misunderstandings in drinking milk, and you must pay attention to avoid them-drinking milk on an empty stomach will increase intestinal peristalsis, shorten the retention time of milk in the stomach, and make the internal nutrients unable to be fully absorbed and utilized. It is best to drink milk with some starchy foods, such as steamed bread, bread, corn porridge and beans, which is beneficial to digestion and absorption. Improper food collocation Milk should not be eaten with foods containing tannic acid, such as strong tea, persimmons, etc. These foods are easy to react with milk and agglomerate, which affects digestion. Prefer highly processed milk. The nutritional value of highly processed milk is not necessarily better than that of fresh milk. This is because after many times of processing, trace elements or inorganic salts are mostly added to milk, but these ingredients do not need to be supplemented by everyone, so they are not necessarily suitable for everyone.