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Upper Body / Chest

Pec Deck

Also known as Machine Fly, Butterfly

ChestMachineIsolationBilateralBeginner
Demonstration coming soon
01 /Setup

Set the seat so the arm pads or handles align with chest height. Sit tall with the back against the pad.

02 /Execution

Bring the arms together in front of the chest with a fixed elbow angle, then return under control to a comfortable stretch.

03 /Key Cues
  • Lead with the elbows, not the hands
  • Keep the chest up and ribs down
  • Stop the stretch where it stays comfortable
04 /Common Mistakes
  • Using the arms to push rather than the chest to squeeze
  • Letting the shoulders roll forward
  • Overloading and shortening the range
05 /Variations
  • Cable fly
  • Dumbbell fly
06 /Alternatives
07 /Evidence / References

No verified references have been added for this exercise yet. This section is awaiting review — nothing here is cited until a source is confirmed.