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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.