describe what happends when one sleeps, regarding breathing, blood pressure, and body heat.

thanks

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Answers:    Blood pressure and body heat drop. Breathing becomes regular and vast. The brain goes through several cycles (not exactly sure it this is 100% correct) but you be in motion to stage 1 which is really light, stage 2 where on earth you start having curious images within your mind, stages 3 and 4 are deep sleep, where on earth your brain is resting. Finally there is REM which is live dream state. The whole cycle last about 90 min. and you run through several each hours of darkness.

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