Chest Exercise · Dumbbell
The decline fly isolates the lower chest through a wide arcing motion rather than a press, so there's no triceps assistance to lean on when the pectorals fatigue. That decline angle changes the line of pull compared to a flat or incline fly, targeting the lower and outer chest fibers more directly. Keep a slight bend in the elbows throughout — locking them out turns this into a shoulder-stressing exercise instead of a chest one.
How to Do the Dumbbell Decline Fly
- Lie back on a decline bench with your feet secured and head positioned lower than your hips.
- Hold a dumbbell in each hand with palms facing each other, arms extended above your chest.
- Lower the dumbbells out to the sides in a wide arcing motion until you feel your chest stretch.
- Pause briefly, then contract your chest muscles to bring the dumbbells back up to the starting position.
- Repeat for your target rep goal, keeping your core engaged and avoiding any reliance on momentum.
Calorie Burn & Set Tracker
Muscles Worked
The Dumbbell Decline Fly primarily targets the Pectorals, with Shoulders as the primary synergist muscle group.
More Chest Exercises
Archer Push Up
Assisted Chest Dip (kneeling)
Assisted Seated Pectoralis Major Stretch With Stability Ball
Assisted Wide-Grip Chest Dip (kneeling)
Band Bench Press
Band One Arm Twisting Chest Press
More Pectorals Exercises
Barbell Bench Press
Barbell Decline Bench Press
Barbell Decline Pullover
Barbell Decline Wide-Grip Press
Barbell Front Raise And Pullover
Barbell Guillotine Bench Press
Equipment Alternatives
Don't have dumbbell? These target the same pectorals with different equipment.
Archer Push Up
Assisted Chest Dip (kneeling)
Assisted Seated Pectoralis Major Stretch With Stability Ball
Band Bench Press
FAQ
- What muscles does the Dumbbell Decline Fly work?
- The Dumbbell Decline Fly primarily targets the pectorals, with the shoulders as the main supporting muscle group.
- What equipment do I need for the Dumbbell Decline Fly?
- The Dumbbell Decline Fly is done with a dumbbell.
- What's a good alternative to the Dumbbell Decline Fly?
- If you don't have access to a dumbbell, the Archer Push Up targets the same pectorals using body weight instead.