"Physician, I simply did not sleep all night dreaming!" - recognize sleep cycle

Physician, I almost did not sleep last night, has been dreaming "in the clinic often heard such complaints; there are cases, watch every day to record their sleep, deep sleep and then worry about the proportion is too small, no head rest.
        Most people think that good sleep is, after lying in bed, sleep through the night, in fact, is a natural sleep rhythms, from light sleep to deep sleep, including the conversion of the following phases: phase one, phase two, slow wave sleep and rapid eye movement sleep (REM) .
Phase I (light sleep)
This is about to fall asleep awake slowly into the state, at this stage we will gradually lose consciousness to external stimuli. Then if there are sound environment, most people can be awakened, and then respond.
Phase II (darker light sleep)
Ranged between light sleep to deep sleep, having gone through this phase for a while, we will feel that they had fallen asleep.
Phase III and Phase IV (slow-wave sleep, deep sleep, sleep period )
This stage of sleep is slow-wave sleep, the brain is still continuing with the activities, but the activities of the district would be more synchronized brain waves will look so slow and large. This stage of sleep is deep sleep, our senses to external stimuli is minimal consciousness.
REM sleep (Rapid-Eye-Movement NC Joining Module , REM)
Also known as contradictory sleep (paradoxical SLEEP) , this phase of the brainwave patterns similar to stage a very, very active brain, accompanied by rapid eye focusing subcutaneous activities, but the core muscles of the loss of muscle strength, body in a limp state. If this time is awakened, often represented as being just a dream.


        A sleep cycle by the "shallow → deep sleep, light sleep a little sleep → → → gradually and then converted to light sleep dreaming", which is about 90 minutes, while the night's sleep, it is by four to six successive cycles consisting of middle short waking up may also occur. Adults who sleep on regular, REM ratio of approximately sleep all night sleep of 25% , a stage approximately 5% , stage two sleep time accounted for the largest proportion of about 50% , the slow-wave sleep accounts for about 20% , this ratio will also be different influence of age. In addition, in the early night's sleep, there would be more slow-wave sleep, let the body relax; and the night and early morning when there are more REM sleep, for processing and storing emotional memory, if the dreaming stage wake up, there will be more profound dream memories and feelings.

    From the above discussion, you can know "Last night I was dreaming, do not sleep" This sentence is not true, because the dream itself is a part of sleep. The use of bracelet record sleep, they do not care about its analysis, the bracelet is active detection and pulse can not really speculate proportion of slow-wave sleep, the results slightly reference to, but should be noted that the time to fall asleep and wake up , try to maintain a regular routine is to improve the quality of sleep of basic skills. Next time when you wake up and from the dream, I remember telling myself, "dreaming is normal, dream mean that I have to sleep," then happy Looking brand new day !