Cat/Cow is a standard exercise to help improve thoracic mobility. Unfortunately, many people do not receive adequate instruction on the movements and end of performing the exercise improperly. In the left picture above, the woman moves excessively from her upper/mid back region. The red arrow indicates clear stiffness or a lack of spine flexion. In the right picture, a clear hinge point is noted in the junction between the thoracic and lumbar spines. This hinge point occurs because the mid thoracic spine does not want to move into extension. Retraining how to perform the proper movement included engaging the transversus abdominus (TrA) and extending through the upper chest to restore thoracic mobility.