Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
While 7 men in 100 have some form of color blindness, only 1 woman in 1,000 suffers from it.
50
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're born with 300 bones, but when you get to be an adult, you only have 206!
17
There are 206 bones in the human body!
-17
One out of 20 people have an extra rib.
66
It takes approximately 12 hours for food to entirely digest.
93