You burn more calories sleeping than you do watching television.
348
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
The strangers in your dreams are actually people that you've seen in real life.
50
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13