Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
The right lung takes in more air than the left.
30
Kissing an infection-free partner is good for your teeth!
141
The human brain is more active during sleep than during the day.
28
The human brain has the capacity to store everything that you experience.
4k
The smallest human penis ever recorded was just 5/8 of an inch long!
77