The strangers in your dreams are actually people that you've seen in real life.
50
The human brain is more active during sleep than during the day.
28
Those who get out of bed by 7am are more likely to be thinner and happier.
20
Cows can sleep standing up, but they can only dream lying down.
745
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
Lack of water is the #1 trigger of daytime fatigue.
148
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23