NREM SLEEP

A BIT OF SCIENCE ABOUT SLEEP

There are two types of sleep called Rapid Eye Movement sleep (REM) and Non Rapid Eye Movement sleep ( NREM ).When you sleep you go through both of these two types.You start with NREM
and then step up to the second phase,REM. Sometimes you wake up before going to the second phase or somebody  may wake you up before stepping up to  the second.However both have interesting things to know.

NREM SLEEP

You start with this.Scientists divide it into three phases. In the first phase your eyes are closed.you seem to be in between waking and sleep.One can wake you up easily you are not worried much about waking up in this phase.This phase lasts about five to ten minutes.
Then comes the second phase where you go to a light sleep.  It is said that in this phase your heart rate slows down and your body temperature decreases a bit.And at the end of this stage you are  ready to go to a deep sleep.The third phase is the deep sleep stage where one can't wake you up easily.And when somebody however wakes you up ,you will get a few minutes to become normal and you may meanwhile utter some blurred words and behave oddly.In this third stage or deep sleep stage very important anabolic activities take place within the body.Worn out body repairs,tissues regrow,bones build,immune system strengthens.