Warm milk calms the nerves: It has long been known that a cup of warm milk before going to bed is helpful to sleep, because milk contains tryptophan, which can play a calming role like amino acids. Drinking milk before going to bed not only won't make you fat, but also can supplement calcium in your body. \ x0d \ x0d \ Milk is one of the oldest natural drinks, known as "white blood", and its importance to human body can be imagined. \x0d\ Milk is rich in minerals, calcium, phosphorus, iron, zinc, copper, manganese and molybdenum. The most rare thing is that milk is the best source of calcium for human body, and the ratio of calcium to phosphorus is very suitable, which is beneficial to the absorption of calcium. There are at least 100 complex species, and the main components are water, fat, phospholipids, protein, lactose and inorganic salts.