This is the motion of the golf swing, soccer kick as well as and walking/running in the low back. The turning has to be learned first which corresponds to walking and putting. Gradually the side bending is added to gain momentum, which corresponds to jogging/running and a full swing. The only requirement before learning this is pelvic tilts/tucks as well as belly breathing and good balance. Anyone with balance problems has to first learn the bracing lower and upper half first.
Whenever the lower ribcage turns to the right relative to the pelvis, you shoulder feel muscles on the right side of your lower back. When you return to where you started, you should feel your stomach muscles. We will show all the positions that this same motion occurs, and you can choose which one you prefer to practice with. If you golf, practice putting first. Otherwise, this motion occurs during walking, which you have to eventually master.