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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.