Your heart pumps about 2,000 gallons of blood each day!
53
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
Wearing tight pants can lead to impotence in men.
120
Your skeleton keeps growing until you are about 35, then you start to shrink.
74
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
Drinking watermelon juice before a workout helps reduce muscle soreness.
21
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18