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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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There are more sensory neurons in the tongue than in any other part of the body.
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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.
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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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There are 20 feet of blood vessels in each square inch of human skin.