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There are 20 feet of blood vessels in each square inch of human skin.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.
The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.