In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
If you hold farts in during the day, they'll just come out when you sleep.
16
The average cat sleeps about 2/3 of the day.
203
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33
You forget 90% of your dreams.
256