Because milk contains a biochemical substance L tryptophan, which can make people tired and sleepy, there are traces of morphine-like substances, these substances have a certain sedative-hypnotic effect, especially L tryptophan, which is the main raw material for brain synthesis of hydroxyl color, pentazocine plays a key role in brain sleep, which can make the brain thinking activity is temporarily inhibited, so that people want to sleep, and without any side effects. The milk is also a good source of calcium in the milk, which can remove tension, so it is more beneficial to the sleep of the elderly, so it is good to drink milk at night, which is conducive to 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 sleeping, especially after zero o'clock in the evening, the level of calcium in the blood will gradually decrease, the decline in blood calcium, promote the parathyroid gland secretion hyperactivity, the hormone effect on bone tissue, so that part of the calcium salt 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 the 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 going to bed is good.

If you can, I still recommend that you go for a walk at night before bed.

This is good for the body.

And you must sleep well at night. Because at night when you sleep is when your body speaks.

At that time is when the bones of the body grow. So sleeping at night is also spring in very critical .

Do some exercise.