If you like to run and. want to know more about how to do it better - Read this book If you want you want to walk for fitness-Read this book if you want to run faster - -Read this book if you want to have more fun -Read this book Whether walking, jogging, running marathons, sprinting or orienteering--this book not only gives you the "hows" but also the "whys" as to how to do it better and how your body can makes positive adjustments to your exercise program.