If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
Perspiration is odorless; it is the bacteria on the skin that creates an odor.
39
A toothbrush within 6 feet of a toilet can get airborne bacteria from flushing.
15
Your body is creating and killing 15 million red blood cells per second.
50
It has been shown that caffeine causes headaches when stopped suddenly and can cause morning headaches that are relieved by a dose of caffeine.
101