This is a wonderful physical exercise for people with shoulder discomfort or bad posture. You are likely to need a resistance band for this exercising. The trapezius plays an accessory purpose in back exercises like rows or pull-ups, but is introduced Middle-phase when carrying out shoulder isolation exercises like shrugs. https://howtobuildmuscleintheuppe87430.aboutyoublog.com/27178471/a-review-of-exercises-for-upper-back