It is best to drink milk at night, because milk contains a biochemical that can make people tired and sleepy L tryptophan, there are traces of morphine-like substances, these substances have a certain sedative-hypnotic effect, especially L tryptophan which is the brain synthesis of hydroxycolors of the main raw materials, 5 hydroxytryptophan on the brain sleep plays a key role in the brain, which can make the brain thinking activity is temporarily inhibited, so that people want to sleep, and no side effects, and also sticky stomach walls on the absorption is also good. Side effects, and milk sticking to the stomach wall absorption is also good, calcium in milk can also clear the tension, so it is more beneficial to the sleep of the elderly, so drinking milk at night is good for people's rest and sleep. Drinking milk before going to bed is conducive to the body's absorption and utilization of calcium. Most of the calcium ingested at dinner is absorbed and utilized by the body before bedtime. After bedtime, especially after 0:00 p.m., the level of calcium in the blood will gradually decrease, the decline in blood calcium, promote the parathyroid gland hypersecretion, hormone action on bone tissue, so that a part of the calcium salts in the bone tissue, dissolved into the blood, in order to maintain a stable balance of blood calcium. This dissolving effect is the body's self-regulation function, over time, will become one of the causes of osteoporosis. Drinking milk before going to bed at night, the calcium in milk can be slowly absorbed by the blood, the whole night blood calcium has been supplemented to maintain the balance, do not have to dissolve the calcium in the bone, preventing bone loss, osteoporosis, so drink milk before bedtime good.

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