(These are the four common bad postures of modern people. The correction of any part needs to start from the trunk, whether it is an abnormal scapular system or a bad leg shape, because the limbs are the extension of the trunk, if the trunk posture is not normal, the limbs will have to compensate, not only prone to dysfunction, but also easy to cause Chronic/acute pain, and lead to unsatisfactory muscle shape, so the correction needs to start with the trunk posture.)