very interesting.i wounder if changing ourselves anatomy wise in pubic are is good or presents limitations as so weak spots to lift weight. i knew girls that change such in order have a duck back to much more of a butt, but that can be dangerous if needs carry big weights due to such weakness created on the spine.but i do thing that behing the balls stretches, maybe with a hand on close body and other pulling might create other force of tension that can create such are expand rather than literally pull it out.