Incline Fly (Dumbbell)

The Incline Dumbbell Fly is an isolation exercise performed on an incline bench that specifically targets the upper portion of the pectoral muscles. By moving the arms in a wide arc, it stretches the chest fibers and builds upper body definition with reduced triceps involvement.

Exercise movement reviewed by:Marie Braga, PT, DPT, CSCS
How Iridium Programs This

Iridium programs this isolation movement to target the upper chest when sub-muscle-group analysis detects fatigue in the triceps that would limit further pressing. The AI also verifies your anterior deltoid recovery status to ensure your shoulders can stabilize the load effectively before adding this to a session.

Form Cues

Do
  • Set the bench to a 30 to 45-degree angle
  • Maintain a slight, fixed bend in your elbows throughout the entire arc
  • Lower the weights slowly until you feel a deep stretch in your upper chest
  • Squeeze your pecs together at the top as if hugging a large tree
Don't
  • Don't let the dumbbells touch or clang together at the top
  • Don't straighten your arms completely; keep the elbows soft
  • Don't drop your elbows below shoulder level if you feel joint pain
  • Don't turn the movement into a press by bending your arms too much

Common Mistakes

  • Using excessive weight and shortening the range of motion
  • Bending elbows excessively during the descent
  • Rushing the negative portion of the rep
  • Overstretching the shoulder joint at the bottom

Muscles Worked

This exercise primarily isolates the clavicular head of the pectoralis major (upper chest), helping to fill out the area just below the collarbones. It also engages the anterior deltoids as secondary movers and relies on the biceps and forearms for stability during the wide arc.

Primary

Upper Chest

Secondary

Anterior DeltoidForearms

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