Milk contains high-quality protein and protein, which are important substances in the body's energy metabolism and nerve metabolism, and can promote the metabolism of the human body, the flexibility and firmness of bones and teeth. Milk is rich in trace elements, such as calcium, iron and phosphorus. Drinking a glass of milk every morning and evening can meet the nutritional needs of the human body and enhance the body's resistance. Milk is also a substance with high energy and high nutrition. If you drink a lot of milk for a long time in a short period of time, it will increase the burden on the kidneys, which will lead to the conversion of heat into fat and accumulation in the body, causing obesity.

a

The advantages of drinking milk: First, drinking a glass of milk before going to bed can help sleep and improve the quality of sleep. Second, drinking milk can also relieve physical fatigue, at the same time, it can also supplement calcium, strengthen tendons and bones, improve the body's immunity, and enhance the body's ability to prevent and resist diseases. Third, drinking milk for a long time can supplement iron, copper and vitamin A in the body, which can make people's skin more delicate and smooth. Disadvantages of drinking milk: you can't drink milk on an empty stomach. Drinking more milk on an empty stomach dilutes gastric juice, which is not conducive to the digestion and absorption of food.

b

From 8: 00 to 9: 00 in the morning, usually within 1-2 hours after breakfast, the pepsin in the stomach increases greatly. If you drink milk at this time, protein in the milk will be digested and decomposed into various amino acids in the human stomach by pepsin and small intestine, and will be absorbed and utilized in the small intestine. In other words, if you drink milk at this time, the nutrition in milk can be absorbed to the maximum extent.

9: 00 to 10: 00 p.m. At this time, it is usually the time before going to bed late, which is usually the most exhausting time for the human body. Drinking milk before going to bed late helps the calcium in milk to be fully absorbed by the human body, maintaining the balance of calcium in the human body. At the same time, the hypnotic and sedative effect of milk can help insomnia people and make them have a good sleep, so drinking milk at this time is also good for the body.

c

A glass of milk (200 ml) per person per day is more appropriate. Drinking too much milk will lead to nutritional imbalance. She stressed that for the elderly, more than two cups of milk a day will increase the risk of cataract.