Dumbbell Laying Reverse Fly
- Beginner
- Dumbbell
The dumbbell laying reverse fly is a reverse fly performed lying chest-down on an inclined bench. That position takes the lower back fully out of the lift and forces the rear delts and mid-back to do all the work as the arms open out to the sides — making it one of the cleanest rear-delt isolations available.
How to do the Dumbbell Laying Reverse Fly
- Set a bench to about a 45 degree incline and lie face-down on it with a dumbbell in each hand.
- Let the arms hang straight toward the floor, palms facing each other, with a slight bend in the elbows.
- Brace the core, plant the toes on the floor, and lock the slight elbow bend for 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
- Isolates and builds the rear delts for balanced shoulder development.
- Removes lower-back strain through the chest-supported position.
- Improves posture by strengthening the upper-back muscles that pull shoulders open.
Common mistakes
- Bending and straightening the elbows mid-rep, which sneaks the triceps and traps into the lift.
- Pulling the dumbbells back like a row, swapping rear-delt isolation for mid-back rowing work.
- Shrugging the shoulders up at the top, which trades rear-delt work for trap engagement.
- Loading too heavy, which forces swinging form and removes the strict isolation the bench enforces.
Frequently asked questions
What muscles does the Dumbbell Laying Reverse Fly work?
The Dumbbell Laying Reverse 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 Laying Reverse Fly?
Only a dumbbell. Nothing beyond that is required to run the movement the way it is described above.
Is the Dumbbell Laying Reverse Fly suitable for beginners?
Yes. The Dumbbell Laying Reverse 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 Laying Reverse 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 Laying Reverse 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 Laying Reverse Fly?
Band External Rotation, Cable External Rotation, and Kettlebell Front Raise train the same primary muscles as the Dumbbell Laying Reverse Fly. Pick whichever one matches the equipment in front of you.