Arteries carry oxygenated blood away from your heart. They have thick walls and a muscular layer that keeps your blood moving. Arteries can be as wide as a nickel (about two centimeters). They are the ...

Pat Howard is a licensed insurance professional specializing in home insurance. He is a former managing editor at Policygenius, where he wrote, edited, and conducted data studies, which were ...

Sarah Klein is a health writer, editor, and certified personal trainer with over a decade of experience in media. She has held editorial positions at LIVESTRONG.com, Health, Prevention, and The ...