In Japan, condoms are commonly sold 'door to door'!
54
If you stop working out, it takes twice as long to lose strength than it took to gain it.
16
Ingrown toenails are hereditary.
15
Every day, the average person swallows about a quart of mucous.
5
The human body contains over a billion miles of DNA.
147
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
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
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55