Sleep is important time for brain rest.And it is essential to live. We soend about one-third to one-fourth of our life to sleep; if your life expectancy is 80 years,sleeping time is 20 years to 25years.

Although physical tireness is restored to some extent by lying rest brain can't talce a rest without. we need to retain good health of mind and body.

Sleep consists of rem sleep and non-rem sleep. There are distinguished by several pattern in our sleeping. Next⇒

Sleep influences a life!?

Actually, There is a close relation to sleep and a life.

According to Kripke of American scholar,Those who are sleeping for 7 hours and a half from 6 hours and a half can live longest. This influences, so that it becomes elderly people. That is, it can guess that these sleeping hours do not hang a burden on the body most. Next⇒