During a typical human life span, the human heart will beat approximately 2.5 billion times.
21
Every year your body replaces 98% of your atoms.
119
Chewing gum boosts your brain power.
285
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
Dieters who sleep more take off more fat that those who sleep less.
159
According to a 1950s survey, 75% of men ejaculate within two minutes of penetration.
109
A man's beard grows fastest when he anticipates sex.
239