The daily milk consumption should be determined according to age, work consumption and economic conditions. Generally speaking, adults should drink 400 ~ 500ml, that is, two bottles (two bags) of milk a day, but at least 250ml, that is, one bottle (one bag) of milk.
Economic conditions allow three bottles (three packs), that is, about 750 ml, but it is best not to exceed 1000 ml. Simply put, it means "guarantee one bottle and strive for two bottles, preferably three bottles and no more than four bottles".
It is not advisable to drink milk on an empty stomach in the morning. Because the gastrointestinal peristalsis is fast when the human body is on an empty stomach, the nutrients in milk often rush into the large intestine before being absorbed. In addition, the method of swallowing milk is not feasible, because it will reduce the chance of mixing with saliva in the mouth, which is not conducive to digestion and absorption. You'd better eat some biscuits, cakes, etc. Before drinking milk, or eating snacks while drinking milk.
Drinking milk at night is more beneficial. Scientific research has found that there is a special law of calcium metabolism in human body: at night, especially at midnight, the plasma calcium content will appear a "trough", forcing the body to transport part of calcium in bones to supplement it through regulation mechanism. Although this temporarily maintains the calcium in the blood, the calcium in the bones is reduced. Milk is rich in calcium. Drinking a glass of milk before going to bed can compensate the body's demand for calcium at night.
Milk should not be cooked with sugar. Milk is rich in amino acids. At high temperature, lysine in milk reacts with sugar to produce a new compound-fructosyl amino acid. This substance can't be digested and absorbed by human body, but it affects human health. It is best to drink fresh milk. If it is too cold, you can heat it a little.