Ingrown toenails are hereditary.
15
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
Cigarette smoke contains 4,800 chemicals, 69 of which cause cancer.
145
Household bleach is the recommended chemical to decontaminate people exposed to the anthrax virus, by the U.S. F.D.A.
16
Your heart beats over 100,000 times a day!
54
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
Your body is creating and killing about 2.4 million red blood cells per second.
17
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36