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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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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

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Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

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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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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

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