![]() Crunching the Numbers on REMĪccording to the American Sleep Foundation, ~20% of your total sleep at night is the average REM sleep amount. – Was almost called “ Jerky Eye Movement” but Aserinksy was afraid that critics would scathe him by playing on the word “jerk”. – Associated with intense brain activity as the brain becomes more active. – The body becomes relaxed and immobilized (muscle paralysis occurs). – Stage 3 & 4 - Slow Wave Sleep (SWS) occurs - these are deepest levels of sleep and sometimes even noises as loud as 100 decibels will not wake a Stage 4 sleeper! – Stage 2 is light sleep - you’re drifting off as your heart rate slows and your body temperature drops. – Stage 1 is the lightest stage of sleep - falling asleep, but not quite there yet. Brainwave frequencies differentiate each stage, along with other biologic rhythms. – The first 4 stages of sleep are categorized based on characteristics of the body and brain during sleep. ![]()
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