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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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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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Excessive alcohol use costs the country approximately $235 billion every year.

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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

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