Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Bats sleep 18-20 hours per day.
5
People who sleep late have more mental stamina and can outperform early risers.
33
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33