Aerobic exercise eg running, cycling, low impact aerobics, walking gives benefit to people with fibromyalgia such as reduced pain, stiffness and physical function.
Busch AJ, Barber KA.R., Overend TJ, Peloso PMJ, Schachter CL. Exercise for treating fibromyalgia syndrome. Cochrane Database of Systematic Reviews 2007, Issue 4. Art. No.: CD003786. DOI: 10.1002/14651858.CD003786.pub2 http://www.cochrane.org/CD003786/MUSKEL_exercise-for-fibromyalgia
Physical activity & exercise can improve pain severity & physical function, and consequent quality of life.
Geneen LJ, Moore RA, Clarke C, Martin D, Colvin LA, Smith BH. Physical activity and exercise for chronic pain in adults: an overview of Cochrane Reviews. Cochrane Database Syst Rev. 2017 Jan 14;1:CD011279. doi: 10.1002/14651858.CD011279.pub2.