why should we close our eyes (but not ears and other senses)  when we sleep?
103525
Because we lose the facial muscle while we r a sleep...all of them  (generally the muscles in the body are lose when we sleep to be comfortable and to relax them)  others like ear or nose do not need muscles to be open\n\n\nLevator palprebrae superioris raises the upper eyelid, pulling it back into the eye socket and exposing the top of the iris and sclera around it. This action opens the eyes wide. It originates in the roof of the orbit and inserts in various tissues, including the surface of the upper eyelid. It is innervated by the oculomotor nerve (III) and is supplied with blood by the internal carotid and supraorbital arteries.
321997
Cause when you yawn, you are thought to release carbon dioxide, and when somebody else gets the carbon dioxide, then they have to release it.  Another theory is, a long time ago when humans first existed, it meant it was time to go to sleep, so everyone would know toy go to sleep.  Isn't that so cute?  ^.^
1001139
Tricky one, personally I'd say deaf because I just find some sights so amazing, so breath-taking, that I'd rather see them and not hear them if I had to make that choice.  You've always got your other senses, so to smell something might be almost as good as hearing it, as well as touching, etc.  It would be annoying though coz people could speak up on you, I guess that goes for either really.  Also, you wouldn't have much trouble sleeping if you could see but not hear, the other way round could be really frustrating.  \n\nUm, as for the second question, I think it depends which sense you lose.  If I lost my sight, I'd be devastated to no longer be able to see what I hold dear and it would grieve me to be unable to watch people grow, things change.  If I had been blind from birth I mightn't miss it so much.  With deafness though, at least if you had had some experience you'd know what things were supposed to sound like and could perhaps substitute certain sounds in your head.  \n\nBizarre, what a good question - very thought provoking (and a time waster, I'm supposed to be working!!!)\n\nBefore anyone says it, I meant no offence to anyone who is already deaf or blind.
9646
Some people naturally do this and many people unknowingly sleep with their eyes partway open.  Most people need to close their eyes to be able to fall asleep, though.
244672
read before you sleep, and read in dim light. this actually makes u sleep faster because the brain becomes more tired.
632495
closing your eyes limits the light that can come through them and refracts the light. if you poke a tiny hole in a piece of paper and look through it, you get the same result. or, just get glasses.
1006342
Scientists do not agree on the need for sleep.  But there are some theories:\n\n1.  It gives the brain time to sort and categorize the information it receives during the day.\n2.  It gives the brain time to receive no new data so that it does not enter a state of information overload.\n3.  It gives the muscles time to refresh with oxygen and nutrients from the food eaten during the day.\n4.  It gives the brain some "time off" when no new stimuli are being bombarded onto it.\n\n\nIncidentally, learn to spell.  Using "wut" in place of what makes you look like a dumbass.  If you ARE a dumbass then bad spelling is to be expected, because you are stupid.  If you are in fact NOT a dumbass, why would you want to be thought of as a stupid idiot.\n\nLearn English, spell properly, and stop following dumbasses who don't know how to spell.  Geeeez, you're an embarrassment.
723235
Dreaming doesn't require your eyes. Dreams are made of subconcious brain activity while you're resting, and they're just basically illusions. There's no actual SEEING going on, so it doesn't require your eyes. They'll dream the same way as everyone else.\n\nHowever, if you were blind from birth, and therefore you don't KNOW what an image looks like, you'll probably dream strictly in emotions and sounds.
755227
Because it is soothing and a constant sound. It is a statistic fact that most people sleep better when listening to rain sounds because they are calming and filter out other noises. So that is probably why you slept all day :)
297109
I loved this question. Since, since I learned about dreams I always want to say this to any one curious - and there you are.\n\nThe brain has different areas that specialize into different thinkings/functions.\n\nMost areas remain unknown but then a lot are know to us.\n\nThere are special areas for vision, hearing, memory, analysis, judgement, speech, hunger, movements, sensations and so on.\n\nIn the stage of sleep the brain actually is working unlike we normally think! Sleep is actually for the body and some parts of the brain.\n\nThe areas of the brain that operate the heart, lungs, and certain higher analysis are actually working at their best.\n\nThe vision, hearing, sensations and movements are all shut down except for a huge stimuli like clock alarm or excessive light or someone touching us to wake us up!\n\n\nRarely, the vision / hearing may not shut down combined with memory being awake - will lead to a dream that we remember the next day.\n\nThe vision/hearing being awake combined with active conciousness will lead to dreams that we feel at night! (or see at night).\n\nThis is the very reason why some people speak in their sleep or make movement including sleep walking!\n\n\nThe brain mostly analyses all the events that occured during the day from a shorter (day) and longer(years) perspective - so dreams are often vivid.
828244
This is true. The computer screen can cause eye strain, thus causing your eyes to want to close. Your brain tells the rest of your body that this is a signal that you are tired and everything else follows suit. To lessen the effect, always have an overhead light on, to reduce the strain on your eyes from the monitor. You can also make your monitor a little darker using the contrast options for a similar effect. Take 10 minute breaks away from the monitor for every hour and a half you are using it.
454045
You really made me crack up on that one.  Of course, I'm going on no sleep, so I'm laughing over the dumbest things.  Anyway, you hear voices in your head because they are being created by your mind and have no reality outside of your mind.  \n\nIf you start hearing things from your arse, then go to the doctor immediately because you have either totally lost it, or you have swallowed a tape recorder which is about to exit and that could hurt!
465207
Sometimes when women close their eyes they are able to feel the emotions and touch to be more satisfying.  And maybe she just likes to close her eyes during sex!!!  good luck
1093568
No. Electromagnetic waves still exist, even when your eyes are shut.
321000
Your brain blacks you out while you sleep, and it does it chemically. It is triggered by adenosine and seratonin but the actually falling asleep is quite complex.\nAlso your mind is not dulled by sleep. During non-rem sleep brain activity is lower but during REM sleep brain activity is often greater than waking life.  Most people's bodies are temporarily paralyzed chemically to prevent the body from moving during sleep, while the senses are being excited by dreams of rem sleep.  This process occurs even if you dont remember dreaming.\n\ncheck:\nhttp://en.wikipedia.org/wiki/Sleep
310028
closed eyes. it makes you feel it more.
1087263
we need to have our eyelids closed while we sleep to proctect our eyes from drying out. so those who might not look completely closed must at least close their eyes some times. or they've had eyelid surgery which has injured their protective mechanism. in which case they'd have to use drops or ointments to protect their eyes while they sleep.