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Did you know?
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Green tea is able to stop the scent of garlic or onion from causing bad breath.
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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
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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.