Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
You burn more calories sleeping than you do watching television.
348
The average cat sleeps about 2/3 of the day.
203
Cows can sleep standing up, but they can only dream lying down.
745