The dumbbell decline one arm fly is a unilateral chest exercise performed on a decline bench, targeting the pectoral muscles and also engaging the shoulders. It requires good control and stability to perform safely, especially due to the decline angle and single arm movement.
Also Works
Shoulders
How to Perform
1
Lie down on a decline bench with a dumbbell in one hand, resting it on your thigh.
2
Using your thigh to help raise the dumbbell, lift it up to shoulder width with your palm facing your torso.
3
Rotate your wrist so that the palm of your hand is facing forward.
4
As you breathe in, lower the dumbbell slowly to the side until you feel a stretch in your chest.
5
Exhale and use your chest muscles to bring the dumbbell back up to the starting position.
6
Repeat for the desired number of repetitions, then switch arms.
Pro Tips
•Brace your free hand against the bench or your thigh for stability since the single-arm load creates a rotational force.
•Lower the dumbbell in a wide arc until you feel a deep stretch in the lower chest, then squeeze it back to the top.
•Keep a slight bend in the elbow locked throughout and avoid turning the fly into a press.
Common Mistakes
•Letting the torso rotate toward the working arm instead of keeping the chest square to the ceiling.
•Lowering the dumbbell too far, which puts the shoulder in a vulnerable position under load.
•Straightening the elbow at the bottom, which turns the fly into a Pullover and stresses the elbow joint.