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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.
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The average adult has about 21 square feet of skin.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.