Cows can sleep standing up, but they can only dream lying down.
745
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
11
If you hold farts in during the day, they'll just come out when you sleep.
16
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15