Good form makes for great results. Wear Good Walking Shoes. Treat yourself to a pair of quality walking shoes, with enough cushioning and support and room in the toebox to keep your feet happy and your body less prone to injury. When your current walking shoes begin wearing out, replace them with a new pair. If you've been physically inactive, are older than 35, have experienced heart or breathing problems, are overweight or have experienced other health problems, it would be advisable to get a physical checkup before starting this program.
Many fitness clubs offer checkups, as do most health clinics and general practitioners.
The physician or tester can best tell you if you can handle the CCC fitness program, or what modifications you have to make in order for it to work for you. Buy at least one quality pair of walking or running shoes. The shoes you trained in for last year's race, or the shoes you cut the grass in last summer, won't do. A visit to a running shop, or a sporting goods store with knowledgeable sales people, is also advised. They can steer you toward the shoe that best suits your needs.