Colbie Cumberland on Instagram: "My shoulder hasn’t been feeling the best recently and this is because my scapula isn’t moving correctly and putting a lot of stress on my rotator cuff so with the addition of alternating rep work and not forceful retraction or arching This essentially helps with my shoulder / scapula function, which allows me to execute the movement more efficiently. #fypシ #fyp #real #gym #exercise #trend #bodybuilding #viral #chest #chestworkout #chestpiece #chestpump #chestpres