On average, 100 people choke to death on ball-point pens every year, so don't stick it in your mouth! See more

A sneeze travels out of your mouth at over 100 mph! See more

A crocodile's tongue is attached to the roof of its mouth and he cannot move it. See more

It is impossible for a human to lick their elbow. See more

An adult human heart weighs about 10 ounces and beats over 100,000 times a day See more

Human thigh bones are stronger than concrete. See more

The human heart creates enough pressure when it pumps, to squirt out blood 30 feet high. See more

Most marine fish can survive in a tank filled with human blood. See more