Dumbbell Single Arm Chest Press

Anton YefanovUpdated September 6, 2026

The dumbbell single arm chest press is a horizontal press loaded on only one side of the body. With one dumbbell pressing up over the chest, the unloaded side has to brace hard to keep the torso flat on the bench, which turns the lift into both a chest press and an anti-rotation core exercise at the same time.

How to do the Dumbbell Single Arm Chest Press

Lie flat on a bench with one dumbbell held over your chest and the other arm braced on the bench.
Plant your feet firmly on the floor and pull your shoulder blades back and down into the bench.
Start with the working arm extended over your shoulder with the palm facing your feet.
Lower the dumbbell slowly to the side of your chest with the elbow tracked at about 60 to 75 degrees.
Pause briefly when the dumbbell touches the side of the chest, fighting any rotation in your torso.
Press the dumbbell back up to full extension, squeeze the chest, and repeat for reps before switching arms.

Muscles worked

Primary:: Chest
Secondary:: Triceps

Why train it

Builds chest and triceps strength one side at a time.
Trains core anti-rotation through real pressing load.
Fixes side-to-side imbalances in horizontal pressing.

Common mistakes

Letting the torso twist toward the working side, which turns the press into a rotational lift.
Flaring the elbow out to 90 degrees, which strains the front shoulder and shortens the press.
Using too much weight and bouncing the dumbbell off the chest instead of pausing or controlling the touch.
Lifting the off-side hip or shoulder off the bench for leverage, which destabilizes the lift.

Frequently asked questions

What muscles does the Dumbbell Single Arm Chest Press work?

The Dumbbell Single Arm Chest Press trains the chest as the main target. Expect the triceps to take some of the load as well.

What equipment do I need for the Dumbbell Single Arm Chest Press?

Only a dumbbell. Nothing beyond that is required to run the movement the way it is described above.

Is the Dumbbell Single Arm Chest Press suitable for beginners?

Yes. The Dumbbell Single Arm Chest Press is rated beginner: the pattern is quick to pick up and forgiving when a rep drifts. Start light and add weight once the form repeats itself without you thinking about it.

Can I do the Dumbbell Single Arm Chest Press at home?

Yes, if you own a dumbbell. That is the whole requirement, and it is the reason this one travels well between a home setup and a gym floor.

How many sets and reps of the Dumbbell Single Arm Chest Press should I do?

Three to five sets of 6 to 12 reps. Sit at the lower end with heavier weight when you are chasing strength, and at the upper end when you are chasing size.

What are good alternatives to the Dumbbell Single Arm Chest Press?

Bodyweight Knee Push Ups, Cable Bench Press, and Decline Machine Chest Press train the same primary muscles as the Dumbbell Single Arm Chest Press. Pick whichever one suits the equipment in front of you.