Sleep is a vital need for our bodies. Sleeping takes up 1/3 of the time of each person's life. During sleep, our bodies secrete these hormones important to help metabolism, accumulating the energy necessary for operation in October and the growth process the body, helps the brain to rearrange the information system, set up and strengthen the ability of long-term memorization of the brain. This is extremely necessary for the body to grow and adapt to the living environment. New born babies need to sleep up to 20 hours each day talking up the importance of sleep for the process of physical and spiritual development of the US
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