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Shoulders

Cable rear delt fly: how to do it right

The cable rear delt fly opens your arms back with the cables crossed. It works the back of your shoulder, which is often undertrained and helps your posture.

Main muscle
Shoulders
Also works
Mid traps, Rhomboids
Equipment
High cables
Level
Intermediate
Cable rear delt fly: start position
Start position
Cable rear delt fly: end position
End position

Step by step

  1. Set both pulleys at shoulder height and grab the left cable with your right hand and the right cable with your left.
  2. Stand in the middle with your arms crossed in front of your chest, elbows slightly bent.
  3. Open your arms back until they're in line with your shoulders.
  4. Return slowly to crossed arms.

Tip: You can do it without handles, holding the cable stoppers directly.

Common mistakes

Squeezing your shoulder blades at the end

If you mostly feel your back, stop a little earlier: the work belongs to your rear delts.

Too much weight

It's a small muscle: use light weight and lots of reps.

Shrugging

Keep your shoulders down.

Sets and reps

Guide ranges. Start with a weight where the last rep is hard but your technique holds.

GoalSetsRepsRest
Strength3–53–62–3 min
Build muscle3–46–121.5–2 min
Health and fitness2–310–151 min

In GymOrbita you log every set and the app suggests the weight for your next session based on what you did last time.

Alternatives

If the machine is busy or you want a variation:

FAQ

How many reps?

Between 12 and 20 usually works best for rear delts.

General technique information, not a substitute for professional advice. If you have an injury or pain, check with a doctor or physiotherapist first.

Add cable rear delt fly to your routine

GymOrbita has this exercise with its animation: log the weight and reps of every set and track your progress. Free.