BETHESDA, MD -- The National Heart, Lung, and Blood Institute (NHLBI) of the National Institutes of Health developed a new publication, Your Guide to Physical Activity and Your Heart, to show the public the impact of physical activity on cardiovascular and overall health. Because physical inactivity is one of several major heart disease risk factors people can do something about, the 44-page guide is full of practical tips, including sample walking and jogging programs, instructions for finding your target heart rate zone, ideas for making fitness a family affair, and an overview of the best physical activities for a healthy heart. The guides can be downloaded for free from