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Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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