The average female will have 3.3 pregnancies in her life.
49
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
21
Your tongue is the only muscle in your body that is attached at only one end.
173
It takes about 20 seconds for a red blood cell to circle the whole body.
102
The average human body contains enough iron to make a small nail.
50
The heart pumps about 1 million barrels of blood during an average lifetime!
30