Stand up straight sideways to a wall.
Stand with your arm to be stretched closest to the wall.
Lift your arm out to the side, and then rotate it so that your palm faces up.
Step closer to the wall so that your fingertips can touch it.
Continue to move closer to the wall so that your fingers and palm lie flat on the wall, or as close to that as you can comfortably manage.
Ensure your arm remains straight and parallel to the ground.
Do not allow your shoulder to hunch up.
You will feel a stretch along your upper arm, into your elbow, and maybe in the front of your wrist.
Hold this position.
