47% of people have a nightmare at least once a month.
186
Lack of water is the #1 trigger of daytime fatigue.
148
Bats sleep 18-20 hours per day.
5
If you hold farts in during the day, they'll just come out when you sleep.
16
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
You burn more calories sleeping than you do watching television.
348