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Your heart beats over 36 million times a year.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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The horizontal fraction bar was introduced by the Arabs.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.