Shoulder I raise in prone (Scapular retraction stabilization, prone-I, lifting arms, palms neutral)

Lie on your front with your forehead rested on a small towel.
Keeping them straight, move your arms out to your sides and up so that your upper arms lie beside your head.
Rotate your forearms out so that your palms face in towards one another.
Keeping your chest and head in contact with the floor throughout, squeeze your shoulder blades together, and then lift your arms off the floor.
Hold this position.
Relax and repeat.