Cows can sleep standing up, but they can only dream lying down.
745
The strangers in your dreams are actually people that you've seen in real life.
50
Bats sleep 18-20 hours per day.
5
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
Honeybees never sleep.
276
The average cat sleeps about 2/3 of the day.
203
Dieters who sleep more take off more fat that those who sleep less.
159
If you hold farts in during the day, they'll just come out when you sleep.
16