

The two main components of this stretch. Is bringing your arms behind back are shoulder extension and internal rotation. Along with these two patterns, there are also all the motions that the shoulder blades go through.
Depending on where exactly you want your arms to be, the scapula perform scapular rotation, elevation, adduction, and shoulder flexion. As we can see, there’s a lot going on behind the scenes when we go to scratch an itch on our backs. This also emphasizes where our stretches will be placing the most attention in the shoulders and the scapula.