Your ears secrete more earwax when you are afraid than when you aren't.
229
Your stomach produces a new layer of mucus every two weeks so that it doesn't digest itself.
160
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
During menstruation, the sensitivity of a woman's middle finger is reduced.
47
Pain travels through your body at 350 ft. per second.
36
A toothbrush within 6 feet of a toilet can get airborne bacteria from flushing.
15