According to many years' research by milk nutrition experts at home and abroad, drinking a glass of milk every day has at least 13 benefits for human body 1, and potassium in milk can keep arterial blood vessels stable under high pressure and reduce the risk of stroke; 2. Milk can prevent the human body from absorbing toxic metal lead and cadmium in food; 3. Yogurt and fat can enhance the immune system function and prevent the growth of tumor cells; 4. Iron, copper and lecithin in milk can greatly improve the working efficiency of the brain; 5. Calcium in milk can strengthen bones and teeth and reduce the occurrence of bone diseases; 6. Iron, copper and vitamin A in milk have cosmetic effects; 7. Tyrosine in milk can promote the growth of hormone-serotonin; 8. Magnesium in milk can make the heart resistant to fatigue; 9, zinc in milk can make the wound heal faster; 10, vitamin B in milk can improve vision; 1 1, drinking milk can prevent arteriosclerosis; 12, milk contains high calcium and is well absorbed; 13, drinking milk before going to bed can help sleep. 1. 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 gulping milk is not enough, because it will reduce the chance of mixing with saliva in the mouth and is not conducive to digestion and absorption. It is best to eat some biscuits, cakes, etc. before drinking milk, or drink milk while eating snacks. It is more beneficial to drink milk at night. 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 "low valley", forcing the body to transport some calcium in bones to supplement it through regulation mechanism. In this way, although the calcium in the blood is temporarily maintained, the calcium in the bones is reduced. Milk is rich in calcium, so drinking a glass of milk before going to bed can compensate the body's demand for calcium at night. 3. Milk should not be boiled 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 not be digested and absorbed by human body, but affects human health. It is best to drink milk fresh, if it is too cold, it can be heated slightly.