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Did you know?
Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
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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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There are more sensory neurons in the tongue than in any other part of the body.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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Blood is approximately twice as thick as water because of the cells and other components found in it.