Bats sleep 18-20 hours per day.
5
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
Termites work 24 hours per day and they do not sleep.
57
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
The human brain is more active during sleep than during the day.
28
People who sleep late have more mental stamina and can outperform early risers.
33