As I was working my way through school, I supported myself, working as a certified & licensed massage therapist. I would recommend considering massage therapy but would start off with Swedish style massage. This modality is the most gentle (but highly effective) and could be quite beneficial for your condition. Another thing I would suggest is to consider taking a break from your training sessions and to try water aerobics. This type of exercise is low impact. The buoyancy of the water reduces the amount of stress on your body and helps strengthen your muscles. Now that I am retired, I practice what I preach and go for regular massage which helps my body, mind and spirit. And, I really enjoy my water aerobics classes. Best of luck to you.