The pec deck, or chest fly machine, guides the arms through a fixed arc so you can focus entirely on squeezing the chest. It is stable, easy to learn and a safe way to add chest volume at the end of a workout.
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3
Sets
15
Reps
Machine
Equipment
5.50
Cal/min
🎯 Muscles Worked
🎯
Primary
Chest
📋 How To Perform Pec Deck Machine
1
Sit with your back flat against the pad, grips or arm pads at chest height.
2
Keep a slight bend in your elbows.
3
Bring your arms together in front of your chest, squeezing hard.
4
Return slowly to the stretched position — don't let the weight stack drop.
5
Keep your back pressed against the pad throughout, don't arch forward.
💡 Benefits of Pec Deck Machine
Isolates the chest with very little risk and no need to balance the weights. It is also a useful option for beginners learning to feel the chest working and for experienced lifters finishing a session.
📈 Sets, Reps & Programming
Do 3 sets of 12 to 15 reps with a slow, controlled tempo and a one-second squeeze at the centre. Adjust the seat so the handles are at chest height, and keep the shoulder blades pulled back against the pad.
⚠️ Common Mistakes to Avoid
Setting the seat too low so the shoulders roll forward
Letting the weight stack slam between reps
Over-stretching behind the body at the open position
✅ Pro Tips
Adjust the seat so the handles are at chest height and the elbows slightly below the shoulders
Keep the shoulder blades pulled back against the pad throughout
🛡️ Safety Notes
Do not allow the arms to travel far behind the torso at the open position, which strains the shoulder joint. Use a moderate weight and stop if the front of the shoulder hurts.
🔁 Progressions & Regressions
Make it harderslow tempo with a two-second pause at the squeeze.
Make it easierlighter weight with a shorter range.
