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The average office desk has 400 times more bacteria on it than a toilet.
Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.
Vaccines prevent between 2.5 and 4 million deaths every year.
There are more sensory neurons in the tongue than in any other part of the body.
There are 60,000 miles of blood vessels in every adult human.
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