What causes people to fall asleep?!


Question: What causes people to fall asleep.?
please dont give me lame answers like 'oh the go to bed and zzzzzzzzz' i have received a numer of those, is there any chemicals to do with sleep.?
just wonderinHealth Question & Answer


Answers:
I'll try to answer as best as I can. Sleep is caused by a rhythm cycle, the reason we feel tired by late evening and want to get to sleep. It dictates when you get sleepy and for how long. There are multiple levels of sleep.
You can read more about it at the links below, but I'll just quote what I think is important to save you time. Look at the links if you wish.
http://en.wikipedia.org/wiki/Sleep

http://en.wikipedia.org/wiki/Circadian_r...

"Sleep timing is controlled by the circadian clock, by homeostasis and, in humans, by willed behavior. The circadian clock, an inner time-keeping, temperature-fluctuating, enzyme-controlling device, works in tandem with adenosine, a neurotransmitter which inhibits many of the bodily processes that are associated with wakefulness. Adenosine is created over the course of the day; high levels of adenosine lead to sleepiness. In diurnal animals, sleepiness occurs as the circadian element causes the release of the hormone melatonin and a gradual decrease in core body temperature. The timing is affected by one's chronotype. It is the circadian rhythm which determines the ideal timing of a correctly structured and restorative sleep episode.[5]

Homeostatic sleep propensity, the need for sleep as a function of the amount of time elapsed since the last adequate sleep episode, is also important and must be balanced against the circadian element for satisfactory sleep. Along with corresponding messages from the circadian clock, this tells the body it needs to sleep.[6] Sleep offset, awakening, is primarily determined by circadian rhythm. A normal person who regularly awakens at an early hour will generally not be able to sleep much later than the person's normal waking time, even if moderately sleep deprived."Health Question & Answer

take some meth and your problems are solved! :)


jk im not really advocating drugsHealth Question & Answer



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