
lying supine, arm elevated 90 degrees, punch dumbbell toward ceiling by protracting scapula, then retract to neutral and repeat
Lie on the back with feet on the floor and knnes bend, elevate the arm to 90 degree towards the ceiling with holding a dumbbell in hand. Punch towards the ceiling rounding the shoulder, un-round the shoulder to starting position and repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.