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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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Everyone has one nostril that is larger than the other.
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The horizontal fraction bar was introduced by the Arabs.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.