Dumbbell Decline One Arm Fly

Lie face down on a decline bench holding a dumbbell in one hand. Extend your arm out to the side, keeping a slight bend in your elbow. Lower the dumbbell in a controlled manner towards the floor. Lift the dumbbell back up to the starting position using your chest muscles. Repeat for the desired number of repetitions and then switch arms.

How to perform the Dumbbell Decline One Arm Fly

  1. Set up. Set up in a stable, balanced starting position appropriate for the Dumbbell Decline One Arm Fly using your dumbbell.
  2. Brace and execute. Brace your core, control the descent, and move through a full pain-free range of motion while emphasizing your pectoralis major.
  3. Reset. Reverse the movement under control and reset between repetitions, keeping your form crisp on every rep.

Coaching cues

  • Move with intent — every rep should feel deliberate, not rushed.
  • Drive force through your pectoralis major rather than momentum.
  • Keep your breathing steady: exhale on the hard part, inhale on the reset.

Common mistakes

  • Using too much weight and losing positional control.
  • Cutting the range of motion short and missing the target muscle.
  • Letting your spine round or hyperextend instead of staying neutral.

Detailed cues, common mistakes, and demonstration video are available in the Fitly app.

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