Honeybees never sleep.
276
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
The strangers in your dreams are actually people that you've seen in real life.
50
Those who get out of bed by 7am are more likely to be thinner and happier.
20
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
Sea otters hold hands while sleeping so they don’t drift away from each other.
104