Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
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The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
"Dysania" is the state of finding it hard getting up out of bed in the morning.
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People who sleep late have more mental stamina and can outperform early risers.
33
Bats sleep 18-20 hours per day.
5
Those who get out of bed by 7am are more likely to be thinner and happier.
20
Sea otters hold hands while sleeping so they don’t drift away from each other.
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