One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Those who get out of bed by 7am are more likely to be thinner and happier.
20
Bats sleep 18-20 hours per day.
5
Cows can sleep standing up, but they can only dream lying down.
745
People who sleep late have more mental stamina and can outperform early risers.
33
You forget 90% of your dreams.
256
Sea otters hold hands while sleeping so they don’t drift away from each other.
104