Dumbbell Rear Delt Fly
- Beginner
- Dumbbell
The dumbbell rear delt fly is the standing bent-over version of the reverse fly. Hinging at the hips and opening the arms wide loads the rear delts and the muscles between the shoulder blades, building the back-of-shoulder mass that balances out the front-delt work everyone already gets from pressing.
How to do the Dumbbell Rear Delt Fly
- Stand tall with a dumbbell in each hand, then hinge at the hips until the torso is nearly parallel to the floor.
- Let the arms hang straight down beneath the shoulders, palms facing each other, with a slight bend in the elbows.
- Brace the core, set a flat back, and lock the slight elbow bend in place for the rest of the set.
- Open the arms out to the sides in a wide arc, leading with the elbows toward the ceiling.
- Squeeze the rear delts and the middle of the back together at the top of the lift, pausing briefly.
- Lower the dumbbells under control over 2 to 3 seconds back to the hanging start position.
Muscles worked
- Primary:
- Shoulders
Why train it
- Builds the rear delts for balanced shoulder development.
- Strengthens the muscles between the shoulder blades for better posture.
- Counters the forward-shoulder pull from heavy pressing volume.
Common mistakes
- Standing too upright, which turns the lift into a half lateral raise and misses the rear delts.
- Pulling the dumbbells back like a row, swapping rear-delt isolation for mid-back rowing work.
- Shrugging the shoulders at the top, which trades rear-delt work for trap engagement.
- Rounding the lower back at the hinge, which loads the spine instead of the working muscles.
Frequently asked questions
What muscles does the Dumbbell Rear Delt Fly work?
The Dumbbell Rear Delt Fly trains the shoulders, and little else. No other group takes a meaningful share of the load, which is what makes this a clean way to target the shoulders directly.
What equipment do I need for the Dumbbell Rear Delt Fly?
Only a dumbbell. Nothing beyond that is required to run the movement the way it is described above.
Is the Dumbbell Rear Delt Fly suitable for beginners?
Yes. The Dumbbell Rear Delt Fly is rated beginner: the pattern is quick to pick up and forgiving when a rep drifts. Start light and add weight once the form repeats itself without you thinking about it.
Can I do the Dumbbell Rear Delt Fly at home?
Yes, if you own a dumbbell. That is the whole requirement, and it is the reason this one travels well between a home setup and a gym floor.
How many sets and reps of the Dumbbell Rear Delt Fly should I do?
Three to four sets of 10 to 15 reps. Isolation work responds to reps and a controlled tempo rather than load, so stop each set a rep or two short of failure and keep the weight honest.
What are good alternatives to the Dumbbell Rear Delt Fly?
Band External Rotation, Cable External Rotation, and Kettlebell Front Raise train the same primary muscles as the Dumbbell Rear Delt Fly. Pick whichever one matches the equipment in front of you.