I have found that for myself exercise is surely a love/hate relationship. Before fibromyalgia I was very active with exercise often doing aerobic activity and eventually getting into running. Now I am no longer able to do those things like before.
I do still exercise. For me personally exercise matters and makes a difference. I just have to know when to stop - when my body is saying enough. Do I always stop? No, but I pay for it when I do not listen to my body.
Yoga has helped me tremendously. On the bad days, I can lighten the yoga sessions and still do something good for my body. I also have a treadclimber at home and use it about 3 days a week on a good week. I had to find the balance. And for me it’s a 3 day rotation usually of Yoga, treadclimber and then a rest day and repeat.
I believe it can help all of us and lessen our symptoms over time. We just have to find the right exercise and the right balance for our bodies. Good luck