Well funny you say that, I have been shooting left handed for 21 years and my shoulder was pretty tore up this year! I could not even draw my bow anymore! I had a pretty rough job to working in a quarry alot of heavy lifting! I recently had it operated on and am still trying to build it back up! Now wheather its from alot of shooting or just a little of both? Its not 100% anymore but its better than before!