Some of us... - ...dream in black and white., We are the only mammals... - ...that can delay sleep., Sleep is different... - ...for men and women., Sleep boosts... - ...immunity., 15% of the population... - ...sleepwalk., It should take 15 to 20 min... - ...to fall asleep., A new bed can... - ...increase the amount of sleep you get., Altitude affects... - ...sleep, Our sense of smell... - ...decreases when we go to sleep.,

curious facts about sleep

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