About 400 different kinds of microbes live on and in the human body.
-3
The lense of the eye continues to grow throughout a person's life.
34
Banging your head against a wall uses 150 calories an hour.
57
You have no sense of smell when you're sleeping!
72
A toothbrush within 6 feet of a toilet can get airborne bacteria from flushing.
15
There is a disease called ichthyosis that turns the skin scaly like a fish.
90
In the average lifetime a person will breath in about 44 pounds of dust.
21
