Pec Deck Fly

Beginner

Pectorals

Leverage Machine

Pec Deck Fly pairs a fixed machine groove with pressing power across the chest — a safe first rung on the ladder.

How to do Pec Deck Fly

Sit on the machine with your back flat on the pad.
Take hold of the handles. Tip: Your upper arms should be positioned parallel to the floor; adjust the machine accordingly. This will be your starting position.
Push the handles together slowly as you squeeze your chest in the middle. Breathe out during this part of the motion and hold the contraction for a second.
Return back to the starting position slowly as you inhale until your chest muscles are fully stretched.
Repeat for the recommended amount of repetitions.

Add to an AI Workout Plan All Chest Exercises Machine Chest Exercises All Machine Exercises

Pec Deck Fly Sets and Reps by Goal

Strength

3 sets of 5-6 reps with 2-3 minutes of rest. Match the seat and pad settings every session.

Hypertrophy

3 sets of 10-12 reps with 90 seconds of rest. Add one plate only when the full range stays smooth.

Endurance

2-3 sets of 15-18 reps with 45-60 seconds of rest. Control the return instead of letting the stack drop.

Common Pec Deck Fly Mistakes

Ignoring seat and pad height between sessions

Write your settings down and reset them before the first rep.

Letting the shoulders roll forward at the bottom

Set the shoulder blades back and down before rep one and hold it there.

Chasing load before the pattern is grooved

Spend the first few weeks making every rep look the same.

Easier and Harder Than Pec Deck Fly

Harder progression

Dumbbell One Arm Decline Chest Press

Swap Pec Deck Fly For

Incline Dumbbell Press

Cable Crossover

Push-Up

Pec Deck Fly — Frequently Asked Questions

How do you do the Pec Deck Fly?

Sit on the machine with your back flat on the pad. Take hold of the handles. Tip: Your upper arms should be positioned parallel to the floor; adjust the machine accordingly. This will be your starting position. Push the handles together slowly as you squeeze your chest in the middle. Breathe out during this part of the motion and hold the contraction for a second. Use a leverage machine and keep the movement controlled through the full range. The animated GIF above shows the complete rep at normal speed.

What muscles does the Pec Deck Fly work?

The Pec Deck Fly primarily targets the pectorals. It is classified as a chest exercise and is performed with a leverage machine.

How many sets and reps of the Pec Deck Fly should I do?

For muscle growth: 3 sets of 10-12 reps with 90 seconds of rest. Add one plate only when the full range stays smooth. Adjust the load rather than the rep target if form breaks down before the final rep.

Is the Pec Deck Fly good for beginners?

Yes. The Pec Deck Fly is a beginner-level movement, so it is a reasonable place to start. Keep the load light enough that you can control every rep and stop 2-3 reps short of failure while you learn the pattern.

What can I do instead of the Pec Deck Fly?

Try the Incline Dumbbell Press, Cable Crossover or the Push-Up. Each trains the pectorals with a similar movement pattern, so you can swap based on the equipment you have available.