Your heart will pump about 212 million liters in its lifetime.
26
The average person's skin weighs twice as much as their brain.
131
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Enamel is hardest substance in the human body.
61
Mushrooms are more closely related to humans than they are to plants.
47
Gorillas can catch human colds and other illnesses.
205
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515