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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.
There are 20 feet of blood vessels in each square inch of human skin.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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