When I first developed fibromyalgia, many years ago, I search for ways to reduce my symptoms.
My physician told me one very common way is to use items that are soft and round such as a tennis ball or some other kind of firm ball in order to apply acupressure (a direct pressure to the painful area or tender point for 20-60 minutes in order to break it up the tightened, restricted fibers).
The rational for this form of treatment comes from the following analogy. When an individual suddenly develops a charley horse in the middle of the night, the natural inclination is to grab at the muscle, start to massage it and then stretch it out. This is a reflexive, instinctive action that takes. On the other hand, when a partial area of muscle tightens producing the same painful phenomenon, the body has no reflex to address the problem. Despite this fact, when the same treatment technique is used … massaging out the muscle knot, stretching out the fibers and then bring them back to their normal resting length, the exact same results can be achieved … successful pain relief!