On average a woman has 4 sexual partners in her lifetime.
-143
The human body contains over a billion miles of DNA.
147
The human brain is more active during sleep than during the day.
28
The human brain doesn't stop developing until about 25 years old.
102
The world's shortest man measures only 21.5 inches.
73
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
Enamel is hardest substance in the human body.
61
A person can live without food for about a month, but only about a week without water.
156