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If you could remove all of your skin, it would weigh up to 5 pounds.
The average office desk has 400 times more bacteria on it than a toilet.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
There are 60,000 miles of blood vessels in every adult human.
Blood is approximately twice as thick as water because of the cells and other components found in it.
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