I have been trying to attain mastery of the exercises for about a week now, but I am worried I am doing something wrong because I have pain in my mid back when I try stack sitting and standing. The pain happens instantly and feels like a combination of muscle fatigue and a mild pinching.
I am trying to get my form right. When I sit, should I be directly on my sitbones, or a little in front of them? I am consciously not pulling my shoulders back, but I think I may be jutting my chest out. Looking at my back, I have a deep ridge that goes from my buttom to the start of my shoulder blades, and then it is flat to my head. When I sit in a comfortable position, my back is rounded and my shoulders are hunched. Could the pain just be from underdeveloped back muscles? I am trying to flatten my back by tucking my rib cage and engaging my top abdominal muscles, but then I feel like I can't breath! I know that is a lot of questions, but my back and I would greatly appreciate any help!