@28bc87a6 My mother had fibrositis syndrome, as it was called, back in the late 70s. Most doctors wouldn't diagnose it because it was a "syndrome." The best therapy for her was riding a stationary bike to keep her body flexible. But, one day I walked in while she was sitting at the kitchen table. I told her that she should be riding her bike. She said, "When I don't move, I don't hurt."  From then, I knew she would physically go down hill. She did.