Question: How do you feel physiology has helped us to better our exercise experience? Do you feel they cover every situation like those with Rheumatoid arthritis that has a lot of stiffness and knots forming on hands and then they have just the overall pain of walking? These are very real health effects out there, and I personally have the rheumatoid, and I do my best to get healthier in my weight, but this disease stops me at times,yet I have pursued it through the pain to only pay for it in other ways.