2. Drink milk before going to bed to promote sleep. Milk contains two hypnotic substances that people didn't know in the past, one of which 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. Milk contains a "natural sleep factor" called α-whey protein, which has the function of regulating brain nerves and improving sleep.
Drinking milk before going to bed helps the human body absorb the nutrients. Milk is rich in animal protein, calcium, vitamins and minerals, which is very beneficial to human body.