If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
About 400 different kinds of microbes live on and in the human body.
-3
Cigarette smoke contains 4,800 chemicals, 69 of which cause cancer.
145
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
According to a study conducted by the University of South Carolina, Marijuana can be used to reduce inflammation and treat autoimmune diseases such as arthritis, lupus, colitis, and multiple sclerosis.
25
You're born with 300 bones, but when you get to be an adult, you only have 206!
17
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Your body is creating and killing 15 million red blood cells per second!
14