2006-07-11 17:09:08 · 10 answers · asked by Coco 1 in Health ➔ Other - Health
Falling asleep and waking up are controlled by various chemical changes in the brain and in the blood. Foods and medicines that alter the balance of these chemicals also affect how well we sleep. Caffeine, for example, can cause insomnia (lack of sleep). Antidepressants can cause a loss of REM (rapid eye movement) sleep, as can smoking and alcohol. Smoking and alcohol also can result in a loss of deep sleep. Both REM and deep sleep are essential parts of the normal sleep cycle.
Sleep is a dynamic process during which the brain is very active. There are recognized stages of sleep, each of which is characterized by a different type of brain wave activity.
It is not clear exactly why the body requires sleep, although inadequate sleep can have severe detrimental effects on health. Studies have shown that sleep is essential for normal immune system function and to maintain the ability to fight disease and sickness. Sleep also is essential for normal nervous system function and the ability to function both physically and mentally. In addition, sleep is essential for learning and for normal, healthy cell growth.
2006-07-11 17:41:37 · answer #1 · answered by thematrixhazu36 5 · 0⤊ 0⤋
melatonin. Your brain produces this naturally and when the sun starts setting, the brain increases its production of melatonin to get us ready for our night time sleeping pattern. You can buy melatonin at a local health food store if you are having trouble sleeping.
2006-07-12 00:15:08 · answer #2 · answered by Fonta 1 · 0⤊ 0⤋
Man, a really good orgasm makes me want to go to sleep.
2006-07-12 00:12:09 · answer #3 · answered by Blim 5 · 0⤊ 0⤋
It is a natural body's reaction when it already needs to rest. Rest is vital for us because we just cannot function properly when we do not rest enough.
2006-07-12 00:15:07 · answer #4 · answered by Jo Ann 6 · 0⤊ 0⤋
Seriously. I want to know too. I hope you get some very informative answers.
2006-07-12 00:12:17 · answer #5 · answered by vinible2006 4 · 0⤊ 0⤋
sleeping pills
2006-07-12 00:12:15 · answer #6 · answered by Anonymous · 0⤊ 0⤋
The sand man!!!!
2006-07-12 00:13:09 · answer #7 · answered by iloverharrypotter_7 1 · 0⤊ 0⤋
idk but when u eat u r more sleepy bc a lil more blood goes to ur digestive system to help digest the food
2006-07-12 00:13:21 · answer #8 · answered by laura h 1 · 0⤊ 0⤋
exhaustion,before that i dont bother
2006-07-12 00:12:45 · answer #9 · answered by Anonymous · 0⤊ 0⤋
TIRED......
2006-07-12 00:12:26 · answer #10 · answered by lou 3 · 0⤊ 0⤋