About 400 different kinds of microbes live on and in the human body.
-3
The average sperm cell swims at 8 inches per hour.
76
From the age of thirty, humans gradually begin to shrink in size.
1
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
Perspiration is odorless; it is the bacteria on the skin that creates an odor.
39