Summary: Keeping your heart healthy takes less exercise than you might expect. Even a short brisk walk can do wonders for your cardiovascular health. On this <i>Health Minute</i>, cardiologist <a href="http://healthcare.utah.edu/fad/mddetail.php?physicianID=u0874835">Dr. John Ryan</a> talks about how even moderate activity a few times a week can help keep your heart strong.
