Adjust the cable to the highest level. Hold the grip in one hand and step back, then place the knee on the active arms side down.
Starting with your arm extended pull your elbow towards the back of your hip, once the grip is aligned with the front of your chest slowly retreat to the start position. Your elbow should remain as close to your body as possible. Activate your core to keep your torso stable throughout. Repeat for the desired repetitions then switch sides.
Avoid swaying your torso or using excessive momentum.