I used to do zumba 3 times a week until January of this year when, out of nowhere, I had a massive flare which resulted in Costochondritis and a swollen knee. My life literally changed overnight. I was so debilitated that exercising was really difficult and swimming seemed to make my back pain worse. Am much better now although still have ongoing pain. Nine months after my initial flare, I have just been diagnosed as having Ankylosing spondylitis and have been approved to start on Biologics. My question is, am I likely to be able to return to high impact exercise, or will I have to stick to low impact from now on? Has anyone been able to do this after starting on biologics? Thanks.