Eating only what you don't have a food allergy to is very very important also. When you eat something your body don't want then the immune system activates an inflamatory response that will increase the inflamation that you are already experiencing in your fibromyalgia muscles. If its over 70 you are probably already in allergic response due to eating something you are allergic to. This reaction creates general inflamation which will mostly be felt in your fibromyalgic muscles. Also try to stay 'cool' with a non-uptight mentally.
Tight thoughts can tighten muscles.
Also slight misalignments of the spinal vertebrae can tighten muscles, so a visit to a chiropractor is very much recommended. The north pole of magnets is known to reduce pain, and magnetism from south poles increases circulation. If you do all these alternative treatments then your fibromyalgia will probably be only a fraction of what it once was. The label on the package also said the same thing. Occasionally I drink too much and then have to slack off, but the side effects are very minor compared to the great benefit of muscle tension relief.