Honeybees never sleep.
276
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
Cows can sleep standing up, but they can only dream lying down.
745