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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Excessive alcohol use costs the country approximately $235 billion every year.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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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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Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.