A man's beard grows fastest when he anticipates sex.
239
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Only 1% of bacteria cause disease in humans!
2
About half of all Americans are on a diet on any given day.
29
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
Every year your body replaces 98% of your atoms.
119
The average human body contains enough fat to make seven bars of soap.
45
Common pesticides such as roach, termite, and flea insecticide can be found in the bodies of the majority of Americans.
11