Walking is the most accessible form of exercise for those with arthritis. All you have to do is open the front door and take the first step. Classified as a weight-bearing exercise, walking helps reinforce bone density by placing your full bodyweight on top of your bones and joints. It also strengthens your heart, lungs and overall endurance [source: Arthritis Foundation].
One way to get started is to follow the Arthritis Foundation's walking program, "Walk With Ease." The program has you develop a walking routine that matches your ability, provides motivational tools to inspire you along the way and teaches safe exercise techniques. If you're not interested in joining a program, simply find a friend who likes to walk. Start at a pace that will make you short of breath, but still able to talk. After a couple of weeks, increase the distance and pace, suggests Dr. White. And do buy a pair of supportive sneakers.