Walking is one of the easiest exercises to do -- all you need is a pair of supportive shoes. If you're wondering how to get started, check out the Arthritis Foundation's 12-Week Walking Plan -- it has weekly timelines for beginning, intermediate, and advanced walkers.
Beginners start with five minutes of exercise three days the first week. Move up to seven minutes the next week. By the end of the fourth week you'll be doing 10 minutes, four days a week. Even at this moderate pace, you can build up to 35 minutes by the end of 12 weeks. Get details on the Arthritis Foundation website.