Chest Exercise · Dumbbell

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Dumbbell Lying One Arm Press

Pressing one dumbbell at a time while lying down forces the core to resist rotation, since the working side wants to pull the torso with it. That unilateral setup also lets each side of the chest be trained to full fatigue independently rather than being limited by whichever arm gives out first in a two-arm press. It's a solid tool for correcting a chest strength imbalance.

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Also known as: Db Lying One Arm Press, Dumbell Lying One Arm Press

Category

Chest

Equipment

Dumbbell

Target

Pectorals

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Exercise reference published by PlanWorkouts; see our editorial standards.

How to Do the Dumbbell Lying One Arm Press

1. Lie back on a bench with a dumbbell in one hand and your feet planted on the floor.
2. Position the dumbbell at shoulder height with your palm facing forward.
3. Press the dumbbell straight up until your arm is fully extended.
4. Hold briefly at the top, then lower the dumbbell back down under control.
5. Continue for the target number of reps, then switch arms.

Technique & Form Tips

Press by straightening the elbows while controlling the movement of the upper arms. Bench presses, push-ups and dips use different support points and shoulder positions; match the setup and range to the demonstrated variation.

Common Mistakes to Avoid

• Extreme elbow flare: Adjust the angle of your upper arms to find a comfortable position for your shoulders.
• Using the wrong shoulder setup: Follow the specific support and shoulder movement shown. A bench-press setup does not apply unchanged to a push-up or dip.
• Using momentum: Control the descent and ascent to focus on steady movement.

How to Breathe During This Exercise

Exhale during the pushing phase and inhale during the return.

Comfort and Control

Choose a load and range you can control. Stop if the movement causes pain. If discomfort persists, stop and ask a qualified professional about an appropriate exercise and range.

General guidance: Mayo Clinic on weight-training technique. Follow the specific movement steps above for this variation.

Muscles Worked

The Dumbbell Lying One Arm Press mainly targets your Pectorals, with your Triceps helping support the movement, along with your Shoulders.

More Chest Exercises

Archer Push Up Body Weight · Pectorals Assisted Chest Dip (kneeling) Leverage Machine · Pectorals Assisted Seated Pectoralis Major Stretch With Stability Ball Assisted · Pectorals Assisted Wide-Grip Chest Dip (kneeling) Leverage Machine · Pectorals Band Bench Press Band · Pectorals Band One Arm Twisting Chest Press Band · Pectorals

More Pectorals Exercises

Barbell Bench Press Barbell · Pectorals Barbell Decline Bench Press Barbell · Pectorals Barbell Decline Pullover Barbell · Pectorals Barbell Decline Wide-Grip Press Barbell · Pectorals Barbell Front Raise And Pullover Barbell · Pectorals Barbell Guillotine Bench Press Barbell · Pectorals

Equipment Alternatives

Don't have dumbbell? These target the same pectorals with different equipment.

Chest Dip Body Weight · Pectorals Barbell Bench Press Barbell · Pectorals Cable Bench Press Cable · Pectorals Exercise Ball Pike Push Up Stability Ball · Pectorals

FAQ

What muscles does the Dumbbell Lying One Arm Press work?

The Dumbbell Lying One Arm Press mainly works your pectorals. It also helps strengthen your triceps and shoulders. Using good, smooth form makes sure you work the right muscles and avoid unnecessary strain on your joints.

What equipment do I need for the Dumbbell Lying One Arm Press?

You do the Dumbbell Lying One Arm Press with a dumbbell. Make sure your equipment is set up safely before starting. If you work out at home or have limited gear, check out our alternative exercises below.

What form mistake should I watch for on the Dumbbell Lying One Arm Press?

One mistake to watch for is extreme elbow flare: Adjust the angle of your upper arms to find a comfortable position for your shoulders.. Use a comfortable range and a controlled return; reduce the load if you cannot maintain the demonstrated setup.

How many sets and reps should I perform on the Dumbbell Lying One Arm Press?

To build muscle size, aim for 3 to 4 sets of 8 to 12 reps with 90 to 120 seconds of rest. To build pure strength, focus on 4 to 5 sets of 3 to 6 heavier reps with 2 to 3 minutes of rest.

What's a good alternative to the Dumbbell Lying One Arm Press?

The Chest Dip trains your pectorals with body weight and a similar movement pattern. Review its form guide before substituting it, since setup and range of motion can differ.