I'm a massage therapist and treat many clients with Fibromyalgia. There are many things that really help and moist heat seems to be one of them. A lot of hot towels get used in my practice. However, we've found a clinic in Reno, NV that has some interesting and successful treatments for autoimmune disorders. Check it out at
http://www.sierraintegrative.com/about.htm There are also clinics in Seattle and Connecticut (I think). What I tell my clients is to stretch slowly and breath deeply. Both Arnica gel and Sombra rub work wonders. Blessings.