The human brain is more active during sleep than during the day.
28
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
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
If you hold farts in during the day, they'll just come out when you sleep.
16
Cows can sleep standing up, but they can only dream lying down.
745