Brain freeze is caused by the brain sensing the drop of temperature on your palate and increasing blood pressure in an attempt to save you from freezing.
14
Fingernails grow nearly 4 times faster than toenails.
31
Your thumb is about the same size as your nose.
124
"Fish odor syndrome" is a rare genetic disorder that causes people to smell like rotten fish.
5
Household bleach is the recommended chemical to decontaminate people exposed to the anthrax virus, by the U.S. F.D.A.
16
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
A person will burn 7 percent more calories if they walk on hard dirt compared to pavement.
45
The smallest human penis ever recorded was just 5/8 of an inch long!
77