This is a bit hard to explain, but I am wondering if others with RD have had a similar observation. Before RD, if I worked some muscles that had been idle for awhile, I would get the usual muscle soreness--the kind that bothers, but in somewhat of a good feeling way. Now, with RD, my muscles react quite differently. I began working my lower ab muscles a few days ago. Now the soreness has set in, but it is more painful--almost as if I am being stabbed with a knife with certain movements. And I have noticed that after a hard day's work in the yard, I barely have any muscle soreness, just mainly overall exhaustion. Is this common with RD? or possibly a result of the meds we take?