Body Facts

A human's small intestine is 6 meters long.

There are as many hairs per square inch on your body as a chimpanzee. You don't see all of them because most are too fine and light to be noticed.

Every hour one billion cells in the body must be replaced.

Dead cells in the body ultimately go to the kidneys for excretion.

By walking an extra 20 minutes every day, an average person will burn off seven pounds of body fat in an year.

The human body is 75% water.