About half of all Americans are on a diet on any given day.
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If you stop working out, it takes twice as long to lose strength than it took to gain it.
16
Your stomach produces a new layer of mucus every two weeks so that it doesn't digest itself.
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By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
A person will burn 7 percent more calories if they walk on hard dirt compared to pavement.
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During a typical human life span, the human heart will beat approximately 2.5 billion times.
21
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
At age 70, more than 70 percent of men are still potent!
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