Bats sleep 18-20 hours per day.
5
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
The average cat sleeps about 2/3 of the day.
203