With each heartbeat, blood courses through your body. Some traverse arteries from the lungs back to the heart, and some navigate through capillaries in the thinnest layers of your eyelid, almost ...

Your blood vessels form an incredible network—about 60,000 miles of arteries, veins, and capillaries that deliver oxygen and nutrients to every cell in your body. While you can’t see this internal ...

Painful cramps in the legs that get better with rest can be a sign of poor circulation. Skin color changes, such as appearing pale, bluish, or gray, indicate poor circulation. Brittle nails and hair ...