Stand up straight facing a wall.
With your legs wider than hips width, bend down into a squat position.
Your back should remain upright and straight.
Place the hand of the arm your would like to exercise on the wall.
With your shoulder blade back and down, simultaneously straighten your legs while sliding your hand diagonally up and across the wall.
Transfer your weight onto your opposite leg to arm to reach as far across as you can.
Control the movement as you slide the hand back to the starting position while bending your knees into a squat.
The aim of this exercise is to control your shoulder blade in the back position, preventing your shoulder from hunching up.