This is a great site that tells you everything you want to know about walking and how to do it effectively and without hurting yourself. I am doing the 10 week walking course and get a newsletter daily with tips and recipes. I am going to redo this course after it is done because I started it before my surgery and have never make my 10,000 steps a day, but I have been close. Walking is great because except for good shoes it is cheap and almost anyone can do it. Check out the site.