2006-11-27 20:06:31 · 5 answers · asked by renu 1 in Health ➔ Mental Health
The interesting thing is, no scientists actually know WHY we have to sleep. They know what causes it, and how much we need, but no one can answer that large question (about sleep) "Why?"
2006-11-27 21:38:30 · answer #1 · answered by amg503 7 · 0⤊ 0⤋
Sleep is created by the release of melatonin, a hormone that your body naturally produced and secreted through the body. At a young age, you should get about 8 hours sleep, but as you age, you begin to produce less melatonin and don't normally get as many hours sleep as when they were younger. If you think about it - Grandma and Grandpa always get up way earlier than you do. There is a supplement of melatonin that helps someone sleep if they take it as a regular supplement - but it doesn't help everyone.
2006-11-27 20:12:47 · answer #2 · answered by MissyChele 3 · 1⤊ 0⤋
Lol! Do you truly imagine scientist took a learn crew of animals, catching them known and hooking electrods up each and every evening to make sure in the adventure that they don' t dream? that's the position being purpose might want to ask the practicality of an surely learn. besides, senile matters and dementia sufferers nevertheless educate theta waves (dream waves) in Rem 4 sleep cycle.
2016-11-29 21:15:17 · answer #3 · answered by Anonymous · 0⤊ 0⤋
7-8 hours. The answer is fatigue. Body needs time to regenerate.
2006-11-27 20:14:11 · answer #4 · answered by tsostler 2 · 0⤊ 0⤋
i heard at least 8 hours a night.
2006-11-28 00:48:27 · answer #5 · answered by debbigeri 3 · 0⤊ 0⤋