When the pain and stiffness of arthritis keep you lethargic and off your feet, your muscles weaken and your energy and strength decline. The more inactive you become, the harder it becomes to walk, climb stairs, and generally function. If limited mobility prevents you from getting the exercise you need, heres good news: Chair exercise can provide you with many of the same benefits as standing exercise. Theres good reason that chair exercise has caught on as a way of re-gaining fitness. The moves are easy to do, you dont have to join a gym or buy expensive, heavy equipment, and you can fit the exercises into your daily routine. And, research has documented the benefits.