Sea otters hold hands while sleeping so they don’t drift away from each other.
104
People who sleep late have more mental stamina and can outperform early risers.
33
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
Those who get out of bed by 7am are more likely to be thinner and happier.
20
The human brain is more active during sleep than during the day.
28
The strangers in your dreams are actually people that you've seen in real life.
50