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Did you know?
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.