UNREAD SUBSCRIPTION ISSUE, WHITE LABEL PLACED ON IMPRINTED MAILING ADDRESS.Discover the ultimate guide to runner's heart rate with this issue of Runner's World Magazine. With 88 pages of insights, tips, and illustrated guides, you'll learn everything you need to know about monitoring your heart rate during runs. This edition focuses on the importance of heart rate monitoring for runners and features contributions from experts and athletes alike. Immerse yourself in the world of health and fitness with this must-read magazine. Whether you're a seasoned runner or just starting out, Runner's World has something for everyone. Get your hands on this issue and take the first step towards understanding the science behind runner's heart rate.BOX 17