On average a woman has 4 sexual partners in her lifetime.
-143
By weight, Bone is five times stronger than steel.
417
The human brain doesn't stop developing until about 25 years old.
102
You can't tickle yourself.
29
Every human spent about half an hour as a single cell.
144
A person can live without food for about a month, but only about a week without water.
156
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111