why do our bodies need sleep?

Question

i don't get it?...so wut our eyes are close but what really happens when you sleep that you're like in another world? wut really is sleep and why do we need it? also why do we dream?

Answer 1

Scientists do not agree on the need for sleep. But there are some theories:

1. It gives the brain time to sort and categorize the information it receives during the day.
2. It gives the brain time to receive no new data so that it does not enter a state of information overload.
3. It gives the muscles time to refresh with oxygen and nutrients from the food eaten during the day.
4. It gives the brain some "time off" when no new stimuli are being bombarded onto it.


Incidentally, 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.

Learn English, spell properly, and stop following dumbasses who don't know how to spell. Geeeez, you're an embarrassment.

Answer 2

Sleep recharges your body mind and soul. It heals your body and recharges your immune system. You can go longer without water than you can without sleep. Fun fact Japanese military members used lack-of-sleep as a torture device during World War II. If I remember right scientists say dreaming is a way to keep your brain active while the rest of your body recharges, if your brain stops, you die. You don't always have to remember your dreams to have dreamed you always do. They say that your brain basically replays events and feelings from the day or earlier life experiences. If you pay attention to your dreams you can learn about yourself and your fears. I think that there is something more to dreams, that maybe God uses dreams to talk to us when we are not listening consciously. for example, before I decided to give my life back to Christ I kept having this reaccuring dream where I was running from something very dangerous down a city street and Jesus stepped out of a shop that was just made out of windows and held out His hand and said, "come with me and I will save you." Depending on what I chose to do the dream had a different outcome. Either the thing I was running from, (a very ugly beast) would catch me, or I would be safe and the beast didn't see me even if I was directly in front of him. It wasn't until I finally accepted Jesus as my savior again that I stopped having these dreams. Sceptics may argue that this was my brain telling me what I wanted to hear but at the time I was quite happy to ignore Jesus. I believe it was truly a divine message. Sorry this was a bit long.

Answer 3

Tons of stuff goes on inside your body when you sleep. Things get repaired, digestion kicks up, all systems are checked on and repaired.

We need sleep the same way your cell phone needs to be recharged!

Dreams are random and nobody knows for sure why they occur but of interest, we only use 5-10% of our brains so dreams just show a whole other power that we are not able to manually or intentionally tap into. Good questions.

Answer 4

Sleep gives the body the chance to rest so it can function the next day and allows time for the brain to sort through the day’s information, replenish chemicals and resolve problems. Sleep is also the time when the body does most of its repair work; muscle tissue is rebuilt and restored. We know, for example, that growth hormone is secreted during sleep. This hormone is important for growth in children, but is also important throughout adulthood in rebuilding tissues.

Answer 5

Sleep is more a mental/psychological requirement than a physical one. It's not our bodies that need the rest, per se, but our minds. It has to do with things like memory, concentration, and other higher functions of the brain.

Dreams are probably "random" brain waves that our brain puts in some "logical" context.

Answer 6

sleep is a time where you can finish your unfinished buisness of the day, dreams are your way of changing the reality of things and making it better. some are convinced that this is the real world, and the rest of life is just backgrownd noise its been proven that going without sleep for 3 days or more will make you insain, i think sleep is just a way for our bodys to reset to start over.

Answer 7

We need to sleep so our batteries can be re-charged and we can function. You must be in full (REM) "rapid eye movement" to get the best sleep. Don't worry about it, because it will
happen by itself! just try to stay up for 48 hours
straight- you won't be able to. Dreams mean that you are really asleep and that your brain is functioning normally- dreams in color are the best!

Answer 8

we need sleep to rest our body physically and rest our mind mentally...during the time we sleep our body will still function in their own schedule to get rid of body toxic...to burn up calories/fat and also to make sure that our physical body (legs/arms etc) muscles are relaxed and not stress out.... our mind/brain will all detoxified itself by replaying current and previous events... it keeps the cells active and fresh...during this process, we will dream or have night mares...

Answer 9

Many people think of their sleeping bodies as if they were cars parked for the night--motionless, engines off, headlights dimmed. But sleep is an amazingly complex state of being. As we sleep, muscles tense and relax. Pulse, temperature and blood pressure rise and fall. Chemicals crucial for well-being course through the blood stream. The brain, like a Hollywood director, conjures up fantastic stories, complete with a plot, characters and action.

You don't simply "fall" asleep. You descend slowly through different levels. As you close your eyes and drift off, you enter the first stage of what is called quiet sleep. Your brain produces irregular, rapid waves, and muscle tension decreases. You breathe smoothly, and mundane thoughts float through your mind. If roused, you might jerk awake quickly and deny that you'd slept at all.

In stage 2 of quiet sleep, your brain waves become larger, punctuated by occasional sudden bursts of electrical activity. You've definitely crossed the border between wakefulness and sleep. If someone lifted your eyelids gently, you wouldn't waken; your eyes no longer respond to stimuli.

As you descend into stage 3, your brain waves become slower and bigger. In this state of deep slumber, your bodily functions slow down even more. Finally stepping into stage 4, you reach deepest sleep, the most profound state of unconsciousness. On an EEG (electroencephalogram), your brain waves would appear extremely large and slow. You are so "dead to the world" that a thunderstorm might not wake you.

This step-by-step journey into oblivion usually takes more than an hour. Then you begin to climb upward, moving rapidly through the same sleep stages as before, not all the way to full wakefulness but in active sleep. Because the pupils dart back and forth, this stage is called Rapid Eye Movement or REM sleep. (The four stages of quiet sleep are often referred to as non-REM or NREM sleep.)

During REM, your brain waves resemble those of waking rather than of quiet sleep. The large muscles of your torso, arms and legs are paralyzed, although your fingers and toes may twitch. You breathe quickly and slowly, the flow of blood through your brain accelerates. REM sleep is the time of vivid dreaming, and if wakened, you'd probably recall a fragment of a fantasy.

After about ten minutes in REM sleep, you descend the sleep staircase again. The entire cycle of REM and NREM stages takes roughly 90 minutes. Early in the night, the periods spent in the deepest stages of quiet sleep are longer. In the second half of the night, REM sleep predominates. By morning, you go around the sleep circuit four or five times.

This pattern changes gradually throughout life. From infancy to adulthood, REM periods dwindle to less than a quarter of a night's sleep. By their thirties, men spend less time in the very deep stages of NREM sleep. Women begin to sleep less deeply in their fifties. By age 65, both sexes spend half as much time in deep sleep as they did when they were 25. The lighter sleep stages increase later in life, and REM shrinks to about a fifth of total sleep time.

Answer 10

What i don't get is why you type "wut." Are you just retarded or does that seem cool to the stupid?

we need sleep because that is the way it is.