Plank Arm Lifts
Plank Arm Lifts is a bodyweight plank variation that challenges your ability to keep the torso still while one arm leaves the floor and reaches forward. It is less about moving a load and more about resisting rotation, shrugging, and hip shift. The exercise is useful for building shoulder stability, trunk stiffness, and clean upper-body control in a position that looks simple but becomes demanding as soon as one support point changes.
The image shows a high plank with the hands under the shoulders, the legs extended, and the body held in one straight line from head to heels. From that base, one arm reaches forward while the other arm and both feet keep the body anchored. That small reach changes your center of mass, so the working side of the shoulder, upper back, and core have to organize the movement without letting the ribs flare or the pelvis twist.
Because the movement is so dependent on position, the setup matters more than speed. A solid plank starts with a firm hand position, active fingers, a braced midsection, and glutes turned on before the first lift. The shoulders should stay stacked over the wrists or close to them, and the neck should remain long and neutral. If the reach is too high, too fast, or too far, the body will usually compensate by rotating, sagging, or shifting weight onto the planted hand instead of staying square.
Use Plank Arm Lifts as a controlled accessory exercise, a warm-up for pressing work, or part of a core block when you want anti-rotation strength and shoulder endurance. Clean reps should look smooth and repeatable, with the lifted arm reaching without the lower back pinching or the hips swinging open. Beginners can scale the drill by widening the feet, shortening the reach, or performing the lift from the knees. Advanced lifters can make it more demanding by slowing the tempo, pausing longer at full reach, or keeping the feet closer together while preserving perfect alignment.
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Instructions
- Start in a high plank with your hands under your shoulders, feet extended behind you, and your body in one straight line from head to heels.
- Spread your fingers, press the floor away, and set your shoulders so they stay strong instead of sinking between your ears.
- Brace your abs, squeeze your glutes, and keep your ribs stacked over your pelvis before the first reach.
- Shift a little more weight into one planted hand without letting your hips turn or your lower back sag.
- Lift the opposite arm off the floor and reach it straight forward in line with your shoulder.
- Keep the lift small and controlled so the torso stays square and the standing hand stays grounded.
- Pause briefly at full reach, then bring the arm back under the shoulder with control.
- Alternate sides for the planned reps while breathing steadily and resetting if your hips start to rock.
Tips & Tricks
- Widen your feet if your pelvis keeps twisting when the arm leaves the floor.
- Think about pushing the floor away with the planted hand so the shoulder stays active.
- Reach only as far as you can without shifting your chest or letting the low back arch.
- Keep the lifted arm in line with the ear or slightly lower; a huge reach usually turns into lost control.
- Look slightly ahead of your hands instead of tucking the chin hard or craning the neck forward.
- Move slowly enough that each rep looks the same from the first inch of lift to the last inch of return.
- Exhale as the arm lifts to help keep the ribs down and the trunk braced.
- End the set when your hips start opening or the planted shoulder collapses.
Frequently Asked Questions
What muscles do Plank Arm Lifts work most?
They heavily challenge the shoulders, core, upper back, and glutes, with the main training effect coming from resisting rotation while one arm reaches.
Is Plank Arm Lifts the same as a plank shoulder tap?
No. A shoulder tap keeps the hand near the body, while this variation sends the arm forward and makes it harder to keep the torso square.
How should my body look in the starting position?
Set up in a strong high plank with hands under the shoulders, legs straight, glutes tight, and the body forming a straight line from head to heels.
What is the most common mistake with the arm lift?
The usual mistake is rotating the hips or shifting too much weight onto one hand instead of keeping the plank square and stable.
Can beginners do Plank Arm Lifts?
Yes. Beginners can widen the feet, shorten the reach, or drop to the knees if needed to keep the torso steady.
Where should I feel the exercise most?
You should feel the planted shoulder, deep core, and upper back working hardest, with the glutes helping keep the pelvis from shifting.
How can I make the movement harder?
Bring the feet closer together, slow the tempo, hold the reach longer, or extend the arm a little farther while keeping perfect alignment.
What should I do if my wrists get uncomfortable?
Keep the hands directly under the shoulders, spread the fingers, and reduce the time under tension; push-up handles or fists can also help if the setup allows it.
