You can't tickle yourself.
29
A person can live without food for about a month, but only about a week without water.
156
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
On average a woman has 4 sexual partners in her lifetime.
-143
Mushrooms are more closely related to humans than they are to plants.
47
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Your heart will pump about 212 million liters in its lifetime.
26