The posterior deltoids, rhomboids, and trapezius muscles are the primary beneficiaries of this exercise. It involves pulling a resistance band or cable towards the face, focusing on squeezing the shoulder blades together. This action specifically works the often-underdeveloped rear deltoids, promoting balanced shoulder strength and stability. Supporting muscles, such as the infraspinatus and teres minor, also contribute to the movement and benefit from the exercise.
Strengthening these muscles plays a vital role in improving posture, preventing shoulder injuries, and enhancing overall upper body strength. Historically, exercises like these have gained prominence as awareness of postural imbalances caused by modern lifestyles, such as prolonged sitting and computer use, has increased. Developing these muscles helps counteract the effects of rounded shoulders and forward head posture, contributing to better biomechanics and reduced pain.