We have studied about Myofascial Pain Syndrome. This time Chinese medicine Dr. Mew talked about the trapezius muscle. When people have bad posture, such as hump back, the trapezius muscle is pulled in a way that continues tension causing a trigger point on the trapezius muscle. This trigger point of the trapezius muscle causes neck pain, shoulder pain, and headaches. In order to adjust posture, we also have to look at the pectoralis and latissimus dorsi muscles.