The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
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The higher someone’s I.Q. the more likely they are to be sleep deprived.
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The average person falls asleep in seven minutes.
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In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
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The human brain is more active during sleep than during the day.
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Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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