Your stomach produces a new layer of mucus every two weeks so that it doesn't digest itself.
160
A hard working adult sweats up to 4 gallons per day. Most of the sweat evaporates before a person realizes it's there, though!
25
You have no sense of smell when you're sleeping!
72
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
During menstruation, the sensitivity of a woman's middle finger is reduced.
47
The average sperm cell swims at 8 inches per hour.
4
Your ears secrete more earwax when you are afraid than when you aren't.
229
Only 1 person in 2 billion will live to be 116.
49