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Did you know?
Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.