Stand up straight with your feet shoulder width apart.
Attach a resistance band to a sturdy object around hip height.
The band should be on the opposite side to the arm you will exercise.
Hold the other end of the band in your hand.
Pull the band diagonally up and away from your body in a steady motion.
Your arm should finish up and away from your body.
Control the movement as you bring your arm back down to the start position.