Want this question answered?

Be notified when an answer is posted

Add your answer:

Earn +20 pts
Q: How many main stages are there during sleep?
Write your answer...
Still have questions?
magnify glass
Related questions

How many stages of sleep there?

There are 4 non-REM stages and REM sleep.

How many stages of NREM sleep?

As of 2008, the American Society of Sleep Medicine combined the stages three and four. So now there are only 3 stages

How many stages are in business cycle?

The main stages are expansion, prosperity, contraction and recession

How many main stages can the history of psychology be divided into?


How many stages of sleep are there?

Stage 1 is light sleep where you drift in and out of sleep and can be awakened easily. In this stage, the eyes move slowly and muscle activity slows. During this stage, many people experience sudden muscle contractions preceded by a sensation of falling.In stage 2, eye movement stops and brain waves become slower with only an occasional burst of rapid brain waves. When a person enters stage 3, extremely slow brain waves called delta waves are interspersed with smaller, faster waves. In stage 4, the brain produces delta waves almost exclusively. Stages 3 and 4 are referred to as deep sleep, and it is very difficult to wake someone from them. In deep sleep, there is no eye movement or muscle activity. This is when some children experience bedwetting, sleepwalking or night terrors.In the REM period, breathing becomes more rapid, irregular and shallow, eyes jerk rapidly and limb muscles are temporarily paralyzed. Brain waves during this stage increase to levels experienced when a person is awake.

How many kilojoules are used during 8 hours of sleep?

How many kilojoules are used during 8 hours of sleep?

How many hours you usually sleep during the daytime at your work?

YOU CAN NOT SLEEP AT WORK!!You will get fired!!!

Do black and white tigers sleep during the day?

Many tigers sleep during the day much that do are white and black tigers, though i have never seen a black and white tiger sleep during the day but many white and black tigers do.

Which stage of sleep comes before REM sleep?

Stage 1

How are sleep disorders linked to age?

.Many people in their 60s and 70s experience less time in the stages of deep sleep known as delta sleep. Despite this change, many healthy older people don't experience sleep disorders. Overall health plays a role in.trouble sleeping.

What are the five stages of sleep and their functions?

The five stages of sleep are these: Stage 1, Stage 2, Stage 3 and 4 are combined into one stage and are called slow wave sleep, and REM sleep. The truth is, no one quite knows the exact function of sleep. There are many theories, but sleep remains a mystery to us. One theory says that it may be to conserve energy. The truth is, that not all of our body rests while we are sleeping. During parts of the night, blood flow to the brain increases and certain parts of the brain actually become more active, such as the pons in the brainstem. All we know for sure is that without sleep, we are not able to function properly.

How many erections will a healthy man experience during sleep?

Physically healthy men experience several prolonged erections during sleep.