Decline Dumbbell Fly
A chest isolation exercise performed with two dumbbells on a head-down bench. The curved arm path emphasizes chest adduction and distinguishes it from a decline press with active elbow extension.
- Body part
- Chest: all exercises
- Movement
- Adduction: all exercises
What it trains
- Chest Lower, Primary, 85%
- Chest Middle, Secondary, 50%
- Front Deltoid, Secondary, 50%
- Forearm Flexors, Stabilizer, 25%
- Teres Minor, Stabilizer, 25%
- Biceps Long Head, Stabilizer, 25%
How to perform
Secure your feet on a decline bench and support your head, back and pelvis on the padding.
Hold a dumbbell in each hand over the chest, palms facing each other and elbows slightly bent.
Open both arms in a controlled arc while keeping the elbow angle nearly unchanged.
Bring the dumbbells together over the chest along the same arc, then repeat within a comfortable shoulder range.
Tips
Use the bench’s leg supports rather than relying on friction to stay in place.
Choose a load you can control without turning the fly into a press.
Keep both shoulders supported and avoid forcing a deep bottom position.
Common mistakes
Straightening or repeatedly bending the elbows to move the weight.
Dropping the arms into an uncontrolled deep stretch.
Lifting the shoulders or sliding on the bench.
Related exercises
Alternatives · 1
Decline Dumbbell Bench Press
A press on the same decline bench can replace the chest-isolation task, but adds active elbow extension.
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