A person can live without food for about a month, but only about a week without water.
156
You can't tickle yourself.
29
The world's shortest man measures only 21.5 inches.
73
Mushrooms are more closely related to humans than they are to plants.
47
The average sperm cell swims at 8 inches per hour.
4
A man's beard grows fastest when he anticipates sex.
239
The human sigh acts as a physiological reset button.
23