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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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There are more sensory neurons in the tongue than in any other part of the body.
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One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.
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Vaccines prevent between 2.5 and 4 million deaths every year.