Your muscles make up about one-half of your body weight. See more

About 70 percent of your body weight is water. See more

Like fingerprints, everyone's tongue print is different. See more

Calculating DNA length for each person, it would stretch across the diameter of the solar system. See more

A chicken who just lost its head can run the length of a football field before dropping dead. See more

It takes about 20 seconds for a red blood cell to circle the whole body. See more

One quarter of the bones in your body, are in your feet. See more

A giraffe can clean its ears with its 21-inch tongue. See more