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Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.