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welcome to top three magazine in this video you're gonna learn the sweet
science behind the human sleep cycle
fact number three
there are two main types of sleep the first one is
non REM this leap consistent four stages of sleep
each deeper than the last
Stage one transition to sleep this stage last about five minutes
your eyes move slowly into your eyelids muscle activity slows down
and you're easily a awakened stage 2
this is light sleep this is the first stage of your true sleep
me lasted for ten to twenty five minutes your eye movement stops
your heart rate slows and your body temperature decreases
stage 3
deep sleep your difficult to awaken and if you're awakened
you do not adjust immediately and after feel groggy and disoriented
for several minutes in this deepest stage of sleep
your brainwaves are extremely slow blood flow is directed away from your brain
and towards your muscles story physical energy
the the second type of sleep is REM
rapid eye movement about 70 to 90 minutes after falling asleep
you enter REM's sleep where dreams occur
your eyes move rapidly your breathing shallows
and your heart rate and blood pressure increase also during this stage
your arms and leg muscles are paralyzed fact number two
sleep cycles your sleep follows a predictable pattern
moving back and forth between the restorative sleep
deep sleep and more alert stages and dreamy
REM sleep together the stages of REM
and NON- REM sleep form a complete sleep cycle each cycle last about 90
minutes
repeats four to six times over the course of the night
and fact number one
average sleep needs by age from newborns
to adults
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