Hold the band with your right hand at shoulder height. Grasp the middle of the band with your left hand and wrap the rest of the band around your wrist.
Stand up straight and activate your core. Extend both arms at shoulder height and on the right side of your body.
Keep the right arm straight and pull the left arm away from the right as if you would draw a bow.
Keep your core engaged and both arms straight the entire time.
If you are able to do more than 10-15 reps, change to a heavier band.