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Did you know?
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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Blood is approximately twice as thick as water because of the cells and other components found in it.
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The horizontal fraction bar was introduced by the Arabs.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.