Chest Isolation · Pec-deck / chest fly machine
Pec-Deck Fly
Primary muscles: Chest
Exercise data by RepDB (repdb.co)
Setup
- Adjust the seat so the handles or pads line up with mid-chest.
- Keep your back against the pad and shoulders set.
- Begin with a comfortable chest stretch - not an extreme one.
How To Perform It
- Bring the arms together in a smooth arc.
- Squeeze the chest briefly.
- Return slowly until you reach the same controlled start position.
Key ASF Cue
“Move through the shoulder - keep the torso still and the chest doing the work.”
Common Mistakes
- Overstretching at the back.
- Shrugging the shoulders.
- Using momentum to close the machine.
Alternatives / Substitutions
Safety Note
Avoid forcing an end range that causes front-of-shoulder discomfort.