Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
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Termites work 24 hours per day and they do not sleep.
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Sea otters hold hands while sleeping so they don’t drift away from each other.
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47% of people have a nightmare at least once a month.
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A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
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The higher someone’s I.Q. the more likely they are to be sleep deprived.
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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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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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