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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
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Your heart beats over 36 million times a year.
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The horizontal fraction bar was introduced by the Arabs.