Is it due to secretion of any chemical in the brain?
Is it simple psychology - 'It is bed time - I have to sleep'?
Physical tiredness or
Is there any other cause?
2006-10-18 13:54:03 · 21 answers · asked by Hobby 5 in Education & Reference ➔ Trivia
I think all of the things you listed are a contributing factor.
2006-10-18 14:13:34 · answer #1 · answered by Tee 2 · 1⤊ 0⤋
It is called circadian rhythms. Humans tend to sleep when it is dark out. I, on the other hand must work all night and sleep in the day. so my natural rhythms are screwed up. Being bored makes us sleepy, reading and watching TV makes me sleepy also physical tiredness.
2006-10-18 21:45:06 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Sleep is the state of natural rest observed in most mammals, birds, and fish. It is characterized by a reduction in voluntary body movement, decreased reaction to external stimuli, an increased rate of anabolism (the synthesis of cell structures), and a decreased rate of catabolism (the breakdown of cell structures). In humans, mammals and many other animals which have been studied, such as fish, birds, mice and fruitflies, sleep is necessary for life. The capability for arousal from sleep is a protective mechanism and also necessary for health and survival. Technically, sleep is different from unconsciousness.
2006-10-18 21:21:55 · answer #3 · answered by Stephen F 2 · 0⤊ 1⤋
Sleeping Pills
2006-10-18 21:01:30 · answer #4 · answered by John Parker Wilson's Gal 1 · 0⤊ 2⤋
I'm no expert but I think it's all those reasons. if you don't sleep enough your body feels tired and your brain can't think well. I see it as a resting, a natural renewal of your body processes overnight. there is a chemical in the body that produces sleep, and as diurnal animals, it probably activates once it starts to get dark.
2006-10-18 20:57:39 · answer #5 · answered by ☻Cool Beans☺ 2 · 0⤊ 1⤋
Knowing that my life is in order, and that all my needs are met. That knowledge is such a deep release, I conk out the minute my head hits the pillow. Sent to you with good energies from Chris, in South Portland, Maine, U.S.A. (I am 63 years old, and have known some pretty wild times.)
2006-10-18 21:05:55 · answer #6 · answered by Anonymous · 1⤊ 1⤋
Too many children and not enough diapers?
Thoughts of being married to an ex?
The fact there's a job waiting for you in the morning?
If you "don't" people will think you're a tweeker?
Bags under the eyes, and "vanity" to prevent them?
2006-10-18 22:53:20 · answer #7 · answered by Republican!!! 5 · 0⤊ 0⤋
I think everything that happens in the body is because of some chemistry reactions, it's certainly because we need to rest and accumulate energy for the next day activities.
2006-10-18 22:14:45 · answer #8 · answered by justme?! 1 · 0⤊ 0⤋
sleeping is just usual. we already know that we need to sleep. sometimes it is due to tiredness because you can pass a day or two without sleeping. it is a little hard to say what makes us sleep but sometimes you just like to sleep when you're bored
2006-10-18 20:58:06 · answer #9 · answered by Curious George 1 · 0⤊ 1⤋
Reading in bed....and I seem to fall asleep faster the more interesting the thing is that I'm reading. Go figure!
2006-10-18 21:17:13 · answer #10 · answered by pat z 7 · 2⤊ 0⤋