When I was a child through my teen years I stood somewhat slumped over. There was nothing wrong with my back, just was the way I stood. Now I am having trouble correcting my posture. The "S" shape of my back has too much curve, so my stomach sticks out a little (I look fatter than I actually am) and my shoulders seem to roll forward. I generally try walking as upright as possible, but after an hour or so, I'm beat! My core muscles seem to be reasonably strong, I perform a range of weights (although they are probably all "light" for this board) on deads and squats. My abs are fairly muscular, but because of the curve, this just makes me look worse. Any input on this would be great!