Cows can sleep standing up, but they can only dream lying down.
745
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
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
Honeybees never sleep.
276
The strangers in your dreams are actually people that you've seen in real life.
50