Instructions
Thread a band around a door handle, hand rail or piece of equipment at approximate chest height. Grasp the band with one hand and take a step back. Keep your arm straight. Place your feet shoulder width apart, knees slightly bent and tip slightly at your torso. Maintaining a straight arm, pull the band down towards you until your upper arm is by your side. Control it back up to the starting position and repeat for the desired number of repetitions, then repeat on the other side.
Tips
Increase the resistance by adding more or stronger bands, and decrease the resistance by using lighter bands.