DUH! I had started Pilates shortly after my injury, but it was too much for me. But I needed to go back because it was the next step in my healing. I had been strengthening all the muscles in the front of my body by my active lifestyle (biking, running, hiking, etc), but the back of my body was not being strengthened. My mishap after swimming for 1000 yards about six weeks ago made me realize that I had gotten very week there. So, it was time to go back to Pilates.