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Did you know?
The human body produces and destroys 15 million blood cells every second.
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The average adult has about 21 square feet of skin.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.