How many hours sleep a day

How many hours sleep a day?

How many hours a day to sleep at night you need?

7-9 hours 5-6 hours of sleep a day might suffice in the elderly may be enough sleep. So how much sleep do we need that young person. Sleep for 10 hours in some cases, individuals subject to the normal adult knows are met. The body is extremely tired and sometimes feel the need for more sleep.
A normal night’s sleep consists of five phases. Dreaming, sleep in rabbits is called a phase. Most of the time dreaming during a dream or woken up. In addition, the first 1-2 hours of sleep during the start of growth hormone, and then secreted hormone cortisone. For this reason, persons who have been without sleep for a long time addition of these hormones *** league is exhausted and the person falls. Subject to normal sleep, but still present in some cases, people will still complain about can not get sleep. Investigations of these people are not regular, and this problem is the occurrence of a deep sleep.