There's 100 trillion good bacteria living in your body.
17
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
One quarter of the human brain is used to control the eyes.
43
By weight, Bone is five times stronger than steel.
417
Children are poisoned most frequently by eating harmful plants.
13
During a typical human life span, the human heart will beat approximately 2.5 billion times.
21
Your ears secrete more earwax when you are afraid than when you aren't.
229
About 400 different kinds of microbes live on and in the human body.
-3