Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
Cows can sleep standing up, but they can only dream lying down.
745
Bats sleep 18-20 hours per day.
5
Honeybees never sleep.
276
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
47% of people have a nightmare at least once a month.
186
The human brain is more active during sleep than during the day.
28