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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
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Cyanide works by making the human body unable to use oxygen.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.