The strangers in your dreams are actually people that you've seen in real life.
50
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
You forget 90% of your dreams.
256
47% of people have a nightmare at least once a month.
186
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
The human brain is more active during sleep than during the day.
28