I will start by saying I have been an avid bodybuilder/powerlifter for ofer 20 years now, also ride all the time. I injured my shoulder weight listing and went to PT for the very first time in my life. They made me do excercise on that yoga ball four about 4 weeks now. I went riding for the first time since doing these excercises today. Holy cr@p what a difference. I am so much stronger, my breathing is controled (which cut my arm pup in half) Forget the free weights and give more different types of "ball" excercises.