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
Only 1% of bacteria cause disease in humans!
2
Dentists have recommended that a toothbrush be kept at least 6 feet away from a toilet to avoid airborne particles resulting from the flush.
104
During a typical human life span, the human heart will beat approximately 2.5 billion times.
21
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Dieters who sleep more take off more fat that those who sleep less.
159
Every hour one billion cells in the body must be replaced.
17
Household bleach is the recommended chemical to decontaminate people exposed to the anthrax virus, by the U.S. F.D.A.
16