During menstruation, the sensitivity of a woman's middle finger is reduced.
47
Smoking while pregnant increases the chances of spontaneous abortions (miscarriages) stillbirths and premature labor.
77
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
Fingernails grow nearly 4 times faster than toenails!
30
It is almost impossible to sneeze with your eyes open. It is a defense mechanism that has evolved to protect our eyes from bacteria and debris.
164
Poor eyesight (myopia) is associated with higher IQ.
232
