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The human body produces and destroys 15 million blood cells every second.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.