A toothbrush within 6 feet of a toilet can get airborne bacteria from flushing.
15
It is possible to go blind from smoking too heavily.
50
Your body is creating and killing about 2.4 million red blood cells per second.
17
The average sperm cell swims at 8 inches per hour.
76
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 human brain uses approximately as much energy as a 10 watt light bulb.
120
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
In 1996, research found that having excessive body hair is linked to higher intelligence.
23