I haven't read all the other comments so not sure if this has been mentioned already. The modern concepts of posture may be wrong. I have a curved butt to sho

I haven't read all the other comments so not sure if this has been mentioned already. The modern concepts of posture may be wrong. I have a curved butt to shoulder area. It makes me look somewhat duck like. However, I never have any back aches etc. I know of people who are straight as a plank, and complain constantly of aches and pains. This TED talk will explain why curved is better than straight: https://youtu.be/k1luKAS_Xcg?t=224 https://youtu.be/k1luKAS_Xcg?t=224