Like you, flare ups don't last long. I know when I've goofed with food the next day, and then revert to my usual non-processed diet, low sugar. But with fibro, best to not rest through it; movement is important. I do a daily walk which helps with tight chest muscles. PT was great, and I have the yoga/isometric/pilates stretches from PT. I wish I would do them daily! My hip/sciatica act up when I do not move enough.