You press, you pull, and yet your shoulders still look flat from behind? The rear of the shoulder is the most neglected area of the upper body. Good news: the cable machine is the ideal tool to bring it up. Here's how to use it.
Why train rear delts on the cable machine
The posterior deltoid stays small and easy to miss. Pressing works mainly the front delts, and the imbalance sets in fast. Shoulders rolling forward, a slumped posture, a rotator cuff under strain: the classic picture for anyone who presses a lot.
The cable gives you something dumbbells can't. Tension stays constant through the whole range, from the start to the final squeeze. With a dumbbell, the resistance drops to nothing at the bottom of the movement. The line of pull is also longer and more stable. It's one of the best ways to target a muscle this small without going heavy.
The cable reverse fly, the go-to exercise
The cable reverse fly between two facing stacks is the king of rear delt exercises. Stand in the middle of the two columns. Each handle is set at chest height. You hold the handles crossed: right hand on the left cable, left hand on the right cable.
Position and execution
Stand with your feet apart, torso leaning forward very slightly. Elbows keep a small bend, then stop moving. Open your arms out to the sides, like pulling a curtain apart. The shoulder blades come together at the end of the range, without forcing through the back.
One detail changes everything: don't try to pull with your arms. Think about driving your hands away from each other. That intent sends the load onto the posterior deltoid and the mid traps, instead of letting the upper traps take over.
Seated, single-arm or from the low pulley
The seated version cuts out torso swing. Single-arm, only one side works: ideal for fixing a gap between left and right. From the low pulley, bent forward, the path gets closer to a dumbbell reverse fly while keeping the tension. These cable rear delt flyes are done in long sets, 12 to 20 reps.
The face pull, the other must-do
The face pull is done on the high pulley, rope set slightly above forehead height. You can also do it seated on an incline bench to lock the torso in place. Step back to put the cable under tension. Pull the rope toward your face while spreading the two ends apart, elbows high and wide. This cable rear delt row brings in the posterior deltoid, the external rotators and the mid-back. An excellent choice at the end of a session, once the heavy work is behind you.
Rounding out the shoulders on the cable
A dual cable station actually covers all three heads of the shoulder. Cable lateral raises build width: keep the arm straight and lift the hand to shoulder height. For the side delts on the cable, running the arm in line with the body gives the best feel. Front raises finish off the front, in moderation.
Cable reverse fly between facing stacks: 4 sets of 15 reps- Rope face pull: 3 sets of 15 to 20
Single-arm flyes on the low pulley: 3 sets per arm
Two sessions a week are enough to make progress. Cable rear delt exercises fit very well in a superset with a horizontal row. Put this work before the big pulling movements if the rear delt is your weak point. A personal trainer can adjust the angles to your build.
Common questions
High pulley or low pulley for rear delts?
Both work. The high pulley gives a downward path, more comfortable for sensitive shoulders. The low pulley lengthens the range and stretches the rear head more.
Should you go heavy?
No. Too much weight shifts the effort onto the back and cuts the range short. Go for a moderate load, a full range and a one-second squeeze.
Rope or single handles?
The rope suits the face pull. For reverse flyes, single handles — or even the bare cables — give a cleaner opening and better targeting on the rear.