Performing the: A Step-by-Step Tutorial Roll Ball Trapezius Lower
Reach your arms forward at chest level and place the ball against a wall.
Press your chest towards the ball, rolling it up and down the wall by bending and straightening your knees. This movement should engage your lower trapezius muscles located in your back.
Keep your back straight and your core engaged throughout the exercise to avoid any strain.
Repeat this exercise for the desired number of repetitions or for a set duration of time.