What muscles does the chest press machine work?

Mainly the chest. The triceps work as a secondary muscle, and the front of the shoulders helps too.

Is the chest press machine good for building muscle?

Yes. Taken close to failure with enough sets, a machine press builds the chest. It is also a safe way to train hard without a spotter.

What seat height should I use?

Set it so the handles line up with the middle of your chest. Too high and your shoulders take over; too low and you push with your arms.

Should I fully lock out my elbows?

Straighten them almost fully, without snapping them into a hard lock. It keeps tension on your chest and is kinder to the joints.

Chest Press Machine: Muscles Worked and Form

How to use the chest press machine

Set the seat height so the handles are level with the middle of your chest, around nipple height.
If the machine has a start lever or an adjustable handle depth, set it so you feel a stretch across your chest at the start, not a strain in your shoulders.
Sit with your back and head against the pad, feet flat on the floor or the footrest.
Grip the handles, pull your shoulder blades back and down, and keep your chest up.
Push the handles forward until your arms are nearly straight, without locking your elbows hard.
Let the handles come back slowly until you feel the stretch again, without letting the weight stack touch down between reps.

Cues that help

"Shoulder blades in your back pockets": it keeps the chest lifted and the front of your shoulders comfortable.
"Push yourself away from the handles": your back presses into the pad as your arms extend.
"Elbows slightly below the shoulders": a moderate angle, not flared straight out to the sides.
"Slow back, no clank": control the return, and keep tension on the chest.

Common mistakes

The seat at the wrong height. Handles at your neck or your stomach shift the work to your shoulders or your arms.
Shoulders rolling forward at the end of each rep. Keep them pinned back against the pad.
A range that is too short. Let the handles come back far enough to feel your chest stretch.
Letting the weights crash down between reps. It takes the tension off and is loud.
Lifting your hips or head off the pad to push harder. That is a sign the weight is too heavy.

Machine or bench press?

Both train the chest well. The bench press asks you to balance a bar and control it with many small stabilising muscles, and it is the lift people compare and compete in. The machine removes the balancing, so you can focus on the chest, train alone without a spotter, and push sets closer to failure safely.

For building muscle, what matters most is training the chest hard enough, often enough. Many people use the bench press as their main lift and the machine for extra sets, or the machine alone when they are starting out.

Sets, reps and weight

For muscle: 3 to 4 sets of 8 to 15 reps, stopping 0 to 2 reps short of failure. The machine makes this safe.
Rest about 2 minutes between sets.
Note the seat height and handle settings, so every session starts from the same position.
Add weight once you reach the top of your rep range on every set; the pin steps on most machines are small enough to progress steadily.

Variations and alternatives

Single-arm machine press: one side at a time, to even out a weaker side.
Incline chest press machine: the handles angled upward, more upper chest and front shoulders.
Bench press: the barbell version, with more stabilising and a heavier top end.
Incline dumbbell press: free weights, each arm on its own.
Push-up: the bodyweight press you can do anywhere.

Tracking your chest press

PushBeyond logs the weight and reps of each set and charts the history of the exercise, so you can see the stack climb over the weeks. Its muscle map counts the chest press for your chest, with triceps as a secondary muscle.

Chest press machine: muscles worked and how to use it

At a glance