why do we need to sleep for 8 hours atleast?

Answer 1

because your brain needs time to rest. your brain needs to stop firing electric impulses so hard. also, chemicals in the brain need to be replenished so the proper timing of the firing of nerve impulses can be restored.

Answer 2

It depends on how old you are and what you do during the day (among other things). If you hike uphill 8 hours a day, you'll probably need more sleep than when you're sitting in class or watching TV.

Babies (and cats) sleep about 16 hours a day. Grammar school kids probably need about 9 hours. In high school you still need 8-9 hours.

As an adult some people can get by on 6 or 7 hours sleep. But others would feel completely wiped out all the time if they didn't sleep more like 8 hours.

Why sleep? To start with, as several people mentioned, the shutdown time gives your body a chance to make daily upkeep repairs.

If you're growing (as a kid or someone working out), your body's natural growth hormones are released more when you're sleeping than at any other time.

Your brain apparently does a lot of reorganization while you sleep. Dreams might be a "side effect" of your brain doing the equivalent of a computer deframenting.

REM sleep appears to be important to your mood when you're awake. When they repeatedly wake people up while in REM sleep, they start getting really cranky during the day, even when the total amount of sleep is normal.

Answer 3

I don't need 8 hours of sleep i feel better if i wake up naturally after 5 or 6 hours than waking up in 8 hours with an alarm clock

Answer 4

You need 8 hours of sleep because the body demands it in order to grow, think, reconstruct itself, and allow all organs-including your brain, to rest. The hours that you sleep are also very important; between the hours of 10:00 pm and 2:30 am your body's immune system resets itself and reconstructs itself in order to protect the body by operating at its optimum. If you continually avoid sleep within that window you may suffer undue illness that most people would avoid. I would say that proper rest is extremely important to maintaining good health and staying young, above all other things....KECK

Answer 5

sounds like a food situation, no longer a snooze situation. What precisely is your recurring interior the morning, what do you consume, drink, if something? a solid balanced breakfast could get you in the process the morning into lunch, yet a mild snack on the time you're getting drained could help. in case you consume a sugary breakfast, like juice, coffee, or maybe some cereals, they're going to advance your blood insulin ranges for a rapid time, then you will "crash", from a drop in insulin and blood glucose. No breakfast in any respect will additionally reason you to "drag". finally, some people have sleep subject concerns, the place they seem to get adequate sleep "time", however the generic of their sleep is poor and interrupted in the process the nighttime, inflicting the sensation of loss of sleep. Sleep Apnia is one such ailment. (some subject concerns would be out of your understanding, in different words, you will no longer even understand you at the instant are not getting high quality sleep till your examined by employing a snooze expert). one extra element, if all of this would not get you an answer, that's somewhat helpful to get some bloodwork finished just to be secure. some issues i could prefer to work out governed out is your insulin ranges (diabetes), and Lymes ailment. They the two, alongside with many different issues could reason fatigue. do no longer prefer to scare you, merely help.

Answer 6

you know i thought that i never needed a full 8 hours of sleep, but i was just informed that if we don't get about 7 to 8 hours of sleep our lives will be reduced 10 years earlier.

Answer 7

Sleeping for 8 hours gives your body time to heal and restore energy.

Answer 8

According to studies, eight hours of sleep is the proscribed time to reset the system that is the human body. It allows the brain to reach REM sleep and then to bring itself out again.

Answer 9

Supposedly it recharges the body and stimulates growth and repair. However, it is healthier to get exactly 7.5 or 9 hours of sleep because of a human's natural dream cycles.

Answer 10

We need to get as close to that amount of sleep as possible. while sleeping our body repairs the damage we have put it through. it also helps our immune system be able to become stronger. also, our brain gets to process what our minds don't process while awake. it is also neede for our digestive system. while we sleep our intestines are able to do what they have to do so we can do do ;)

Answer 11

Most people who get less than their required amount of sleep do poorly on tests and exams, get sick more easily, have more mood swings, and, of course, yawn a lot and are really groggy the next day.