how much sleep does a person really need to stay sharp and healthy??

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Answers:
It really varies for every person. Some people need the often recommended 8 hours a night to feel their best. Other people, only need around 4 or 5, and still some say 9-10. I've ready somewhere that about 7 is the average. They say when you 'naturally' wake up and feel refreshed, you know you have gotten enough sleep. It also helps to try and go to sleep and get up at the same time every day to get your body regulated. For me personally, I can function pretty well on 6.5-7 a night. although I do like to go for 8-9 hours sometimes :)

Other Answers:
every body is programmed or accustomed to going to sleep every night ,and usually at the same time,

and habit tells them that they need 8 hours sleep .
if that scedule is interupted they get worried that they have been deprived of their alloted sleep time.

Man in Nature as a hunter was more like an Animal they hunted day and night ,ate slept around for a couple of days and then off again prowling around being awake sometime for long periods ,and being aware of preditors, catching sleep when it was possible.

in fact we only need about 3 hours sleep a day.
many people would be bored and do not know what to do with their time ,and sleep takes care of that,

and so people lose half their lives in bed
my father slept four hours a night and took a 20 min catnap during the day to refresh.he worked the rest of the time.

i sleep every other day usualy in the morning from 6 until noon.and some times a siesta in the late after noon if i am tired.rarely sleep in the night .because it is quiet,and cool.

a lot of people ,especially when they get older get worried when they cant sleep at night and they take sleeping pills and all kinds of remedies or go to the doktor because they think that there is something wrong with them

they must have their alloted time of sleep otherwise they go crazy.The simple fact is that they do not need to sleep

they should be gratefull that now they have more time to do things,like study and read or work on a hobby or get ahead with their office work.

its only the habit which says that they must have the sleep.
growing children and teenagers need a lot of sleep because they are develloping,but the older you get the less you need to sleep.

many old man are sleepless at night ,but like to take catnaps,siestas or doze in the day time.
so if you cant sleep be happy that your life now is bigger and find something to do.

4hours at night and a hour in the afternoon.
Tried and tested

It is recommended that we need 8 hours sleep daily to stay happy and healthy.

at least 8-9 but the more the better as the longer you sleep the more correctly your body functions

You need 8 hours of sleep at night. You brain gets more rest in darkness (so my mom said) - i think it's because if you sleep in the light, your eyes will still be receiving light cuz the skin on our eyelids is the thinnest skin on our bodies, so the eyes will still be sending signals for the brain to interpret.

Also, i read somewhere that teenagers need 9 hours of sleep.

The whole "eight hours a day" thing doens't apply nowdays.

Those scientist-types now say it's closer to six hours. Personally i manage with three or four.

At least 8 - don't let anyone kid you if you're serious about the
healthy part.

I have gone through a lot of sleep problems in my life. Now, I've got it down and I sleep well.

Saying you need 8 hours of sleep, is like saying you need to be in bed for X number of hours. You need certain kinds of sleep for certain kinds of health issues.

First, you body needs the deep, level 4 sleep, so that you can release human Growth Factor (hGH) - which is what makes you able to grow when you're young, and what keeps your body healthy when you're older. When you're young and your body is growing, you need more of this kind of sleep because you need more hGH, especially during growth spurts (which is why children will go through periods when they seem to sleep longer).

You also need dream sleep - if you don't get it, your body will actually take microseconds to put you in a sleep and dream. It helps you connect with your subconscious, keeps your mind sharp.

If you can get that in 8 hours great. If you can in 6 hours great. You can usually feel for yourself how your reactions are. Many times, the older we get, the harder it is to get in a good, deep sleep. So the number of hours doesn't matter, you still won't feel good if you don't get into a deep sleep.

Long answer, but I've spent a lot of time looking into this. And it's one of the few things in life that I seem to have made better for me.

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how much sleep does a person really need to stay sharp and healthy??

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