In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
Bats sleep 18-20 hours per day.
5
Termites work 24 hours per day and they do not sleep.
57
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
You forget 90% of your dreams.
256
Cows can sleep standing up, but they can only dream lying down.
745