Pec Deck.
Isolation exercise designed to target the pectorals for chest adduction and definition, with minor anterior deltoid involvement.
Also known as: Pec Deck Fly, Machine Fly, Pec Fly Machine, Butterfly Machine
How to do it.
- Step 01
Sit on the pec deck machine with your back flat against the pad.
- Step 02
Adjust the seat height so your shoulders and elbows are aligned with the pivot point.
- Step 03
Place your forearms against the pads, with a slight bend in your elbows.
- Step 04
Bring the pads together in front of your chest, squeezing your pectorals.
- Step 05
Hold the contraction briefly at the peak of the movement.
- Step 06
Slowly return the pads to the starting position, allowing a full chest stretch.
Pro cues.
Avoid shrugging your shoulders; keep them down and back.
Focus on squeezing your chest muscles, not just pushing with your arms.
Control the eccentric phase to maximize muscle stretch and engagement.
Questions, answered.
- What is the Pec Deck?
- Isolation exercise designed to target the pectorals for chest adduction and definition, with minor anterior deltoid involvement.
- What muscles does the Pec Deck work?
- The Pec Deck primarily works your chest. It also recruits your front delts as secondary movers.
- What equipment do I need for the Pec Deck?
- You need a machine to perform the Pec Deck.
- How many sets and reps should I do for the Pec Deck?
- A typical prescription for the Pec Deck is 3–4 sets of 10–15 reps. Rest about 45–75 seconds between sets.
- Is the Pec Deck good for beginners?
- Yes. The Pec Deck is a beginner-friendly movement, so it is a good choice when you are starting out, as long as you keep the load light and focus on form.
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