Simon & Schuster, New York, 1988.  ISBN 0-671-65805-0.  1 audio cassette tape with an approx. playing time of 50 minutes; still in manufacturer’s shrink wrap with some tears to wrap and a bit of wear to box.  Read by the Author.  ‘You know how to walk.  But did you know that the walking you do every day can be transformed into a powerful fitness program?  A program that will give you a full-fledged aerobic workout – without the boredom, pain, and bone-jarring side effects of jogging?  A program that’s actually enjoyable? … Gary tells you how easy it is to set up an exercisewalking program tailored to your individual needs, and explains the simple techniques that will turn your ordinary walking into exercisewalking.’ (from rear box)