Pec Deck Fly

Chest Tier S for Chest Machine Isolation Push

Try it now

3sets

12-15reps

60srest

~3.7kcal/min

ChestS Chest (Mid & Lower)Front Deltoid

Shoulders

Secondary muscles help but are not the main target

Where you should feel it, the one cue to remember, and quick fixes when you feel it somewhere else.

You should feel it inChest

A wide stretch across the chest as the arms open, then a squeeze like hugging a big tree.

Key cue (the coach says it during the set)“Soft elbows, hug a big tree.”

Tempo · Open 3 s · squeeze 1 s

Choosing the load: Pick a weight you finish with 1–2 good reps left. 4+ left = too light; form breaks = too heavy.

Feel it in ShouldersGoing too deep or too heavy. Stop when the arms line up with the chest and use lighter weights.
Feel it in Front of armsElbows bending and turning it into a press. Lock a slight bend and move only at the shoulders.
Barely felt itToo light or too fast. Lower for 3 seconds, pause 1 second at the stretch, and pick a load that leaves only 1–2 reps in the tank.
Joint painSharp or joint pain is a stop sign: end this set, lower the weight, shorten the range — if it repeats, switch to an easier variation.

During a workout we ask after the first set where you felt it and give the fix right away — and remember it for next time.

Sit tall with your back supported so the target muscle does the work.
Keep your shoulders pinned back against the pad throughout.
Set the start position so your hands stay just in front of your body at the stretch.
Adjust the seat so your joint lines up with the machine’s pivot point.