The human brain is insensitive to pain.
76
A toothbrush within 6 feet of a toilet can get airborne bacteria from flushing.
15
A hard working adult sweats up to 4 gallons per day. Most of the sweat evaporates before a person realizes it's there, though!
25
40% of all indigestion remedies sold in the world are bought by Americans.
8
When your face blushes, the lining of your stomach turns red, too.
154
Although African-Americans make up only 13% of the U.S. population, they accounted for one half of the estimated new HIV/AIDS diagnoses in 2004.
70
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15