Early American humans hunted car-size armadillos and used their shells for houses.
12
The average sperm cell swims at 8 inches per hour.
4
You can't tickle yourself.
29
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
On average a woman has 4 sexual partners in her lifetime.
-143
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252