Sleep
sleep deprivation
hours needed
benefits of sleep
improves memory
quicker recovery
reduces stress
better mood
lowers blood pressure
stronger immunity
better skin
Adults 7-9
Younger adults 7-9
Infants 12-15
Newborns 14-17
Toddlers 11-14
Teenagers 8-10
Preschoolers 10-13
School age 9-11
Brain cycles
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Stage 1
Stage 2
REM
Stage 3
Rapid eye movement, dreams, breathing is fast and irregular, hear rate is fast
light sleep and brain waves slow down
light sleep before you enter deep sleep and brain waves are marked by brief bursts of electrical activity.
period of deep sleep where heartbeat and breathing slow to the lowest levels
insomnia
inability to sleep
3 million cases per year
causes
stress
inconstant sleep patterns
hormone imbalances
depression
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