The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
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Bats sleep 18-20 hours per day.
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"Dysania" is the state of finding it hard getting up out of bed in the morning.
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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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The higher someone’s I.Q. the more likely they are to be sleep deprived.
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Lack of water is the #1 trigger of daytime fatigue.
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Cows can sleep standing up, but they can only dream lying down.
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