Also an ancient form of exercise, yoga literally means to unite or yoke. The practice unites movement and breath and can help ease stiffness and tension in muscles and joints. A caveat: Certain yoga poses can be detrimental to the joints. For example, if your shoulders cause you pain, it would be best to avoid chaturanga dandasana (the four-limbed staff pose). It's best to find an instructor that understands and can work around your special needs so as not to further aggravate and inflame your arthritis.
Note to readers: The Arthritis Foundation is currently devising a program that will prevent practitioners from hyper-flexing their joints [source: White].