Your body is creating and killing about 2.4 million red blood cells per second.
17
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
The human brain doesn't stop developing until about 25 years old.
102
There's 100 trillion good bacteria living in your body.
17
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.
22
You see your nose at all times, your brain just chooses to ignore it.
30
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111