Wall Sit Goal Posts

Come up to a wall and do a wall sit (90 degree bend in the legs). Squeeze your elbows together as much as you can shoulders down and back on the body. Open your ams up with your wrists and forearms flat to the wall. Raise your arms up as high as you can, trying to keep everything flat to the wall. Return to the starting position trying to get more range with each move.

You can skip the wall sit if you just want the mobility aspect.