In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
The average person falls asleep in seven minutes.
115
People who sleep late have more mental stamina and can outperform early risers.
33
47% of people have a nightmare at least once a month.
186
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
Cows can sleep standing up, but they can only dream lying down.
745