After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Your thumb is about the same size as your nose.
124
On average a woman has 4 sexual partners in her lifetime.
-143
Early American humans hunted car-size armadillos and used their shells for houses.
12
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
If the human eye was a digital camera, it would have 576 megapixels.
25
Your heart will pump about 212 million liters in its lifetime.
26
One human hair can support 3 ounces.
191