The human brain is more active during sleep than during the day.
28
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
The average cat sleeps about 2/3 of the day.
203
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
47% of people have a nightmare at least once a month.
186