Sea otters hold hands while sleeping so they don’t drift away from each other.
104
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
Dieters who sleep more take off more fat that those who sleep less.
159
The average person falls asleep in seven minutes.
115
The average cat sleeps about 2/3 of the day.
203
Cows can sleep standing up, but they can only dream lying down.
745