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 average tastebud lives only 10 days before it dies and is replaced by a new one.
15
A man's beard grows fastest when he anticipates sex.
239
Chewing gum boosts your brain power.
285
Your wounds heal faster if you lick them, you instinctively do this for that reason. Tears help, too.
20
It takes 17 muscles to smile, 43 to frown.
65
The average sperm cell swims at 8 inches per hour.
4
Smoking while pregnant increases the chances of spontaneous abortions (miscarriages) stillbirths and premature labor.
77