A new baby usually deprives each of it's parents around 350-400 hours of sleep in the first year. That is one entire nights sleep per week, per parent.
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Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
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Bats sleep 18-20 hours per day.
5
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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Lack of water is the #1 trigger of daytime fatigue.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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