Stand up straight facing a wall.
Place your forearms vertically on the wall parallel to one another and around shoulder width apart.
Your palms should face one another.
Ensure your back and head are in a neutral position.
Gently press your elbows into the wall so that you feel your shoulder blades flatten against your rib cage.
Keeping this control, slide your forearms up and down the wall.
The aim of this exercise is to keep the contact with your shoulder blades against your back.
Do not allow your shoulders to hunch upwards with the movement.