Yoga to correct bad posture. In this class we are featuring poses that will help to correct bad posture. It will help to alleviate rounded shoulders, collapsed chest, kyphosis, and forward head. Many of the poses work to pull your shoulders back and down into healthy alignment. This can help to realign your shoulder blades and trapezius muscle, preventing them from lifting up and into your neck. Although persistent practice will be necessary to bring about permanent improvement, many people who are troubled by a stiff upper back and shoulders will get instant respite from practicing a sequence of poses such as this one.