Cows can sleep standing up, but they can only dream lying down.
745
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
Dieters who sleep more take off more fat that those who sleep less.
159
You burn more calories sleeping than you do watching television.
348