Up-Down Plank
What Is the Up-Down Plank?
Up-Down Plank is a compound exercise that primarily targets the core and also engages the shoulders, triceps, chest and glutes. It is an intermediate-level movement performed with body weight only, alternating between a forearm plank and a straight-arm high plank one arm at a time.
The exercise takes the static bracing demand of the Plank and adds a moving element. Because each arm leaves the floor in turn, the body is briefly supported on three points, and the abdominals and obliques have to resist the hips rotating toward the unsupported side. That anti-rotation demand is what separates this movement from a simple hold and makes it a useful bridge between isometric core work and dynamic patterns.
The pressing action also loads the upper body. Extending one elbow at a time to push from the forearm up to the hand is effectively a partial single-arm press against roughly half of your body weight, which recruits the triceps, anterior deltoid and serratus anterior. Trainers often use it in bodyweight circuits and warm-ups where both core stability and shoulder-girdle control are wanted from a single exercise, and it needs no equipment beyond a mat.
Common variations include performing it with the feet wide for more stability, elevating the hands on a bench to reduce the load on the shoulders, always leading with the same arm for a set before switching, or slowing the tempo so each transition takes two or three seconds. Athletes who want more upper-body emphasis often pair it with Plank to Push-Up, while those chasing pure core tension pair it with Hollow Hold.
The movement rewards a strong mind-muscle connection with the deep abdominals and glutes rather than with the arms. Thinking about squeezing the glutes and pulling the ribs down keeps the pelvis level, and the transitions stay smooth instead of turning into a hip-swinging shuffle. Beginners, older trainees returning to floor work and anyone rehabilitating shoulder control benefit from starting on the knees before progressing to the full version.
Muscles Worked
- Rectus Abdominis
- Primary
- External Oblique
- High
- Deltoid
- Medium
- Serratus Anterior
- Medium
- Rectus Femoris
- Minimal
Instructions
- Set up in a forearm plank with elbows under the shoulders, forearms parallel and feet about hip width apart.
- Brace the abdominals, squeeze the glutes and form a straight line from head to heels.
- Place your right hand flat on the floor directly under the shoulder, where the elbow was.
- Press through that hand and bring the left hand up beside it to reach a straight-arm high plank.
- Keep the hips level throughout - resist letting them rotate toward the supporting side.
- Lower the right forearm back to the floor, then the left, returning to the starting plank.
- Repeat leading with the left arm so the sides are worked evenly.
- Breathe steadily and keep the neck neutral, eyes down and slightly ahead of the hands.
- Stop the set when the hips start to sag or sway rather than pushing to failure.
Common Mistakes
Swinging the hips
Letting the hips rock side to side during each transition shifts work away from the core and reduces the anti-rotation benefit.
Sagging lower back
Allowing the pelvis to drop below the line of the body loads the lumbar spine instead of the abdominals.
Hands out of position
Placing the hands ahead of the shoulders when pressing up increases wrist strain and makes the press much harder than it needs to be.
Always leading with the same arm
Pressing up with the dominant arm every repetition builds an imbalance between sides over time.
Rushing the reps
Racing through the up-down cycle turns the movement into momentum work and loses the tension the exercise is designed to create.
Holding the breath
Bracing without breathing spikes blood pressure and causes the set to end early from lightheadedness rather than muscular fatigue.
Injuries
Up-Down Plank is a low risk exercise when performed with proper technique. The most common complaints are wrist discomfort in the top position, shoulder fatigue during the press, and lower-back tightness when the hips drop below the line of the body.
Wrist strain usually comes from loading the hands with the fingers passive. Spread the fingers wide, grip the floor lightly and keep the wrist stacked under the shoulder rather than in front of it. If the wrists still complain, perform the exercise on dumbbells or push-up handles so the wrists stay neutral. Shoulder discomfort is often a sign the transitions are being rushed; slowing each press and keeping the shoulder blades spread rather than pinched keeps the joint in a stronger position.
Lower-back stress appears when the abdominals give out and the pelvis tips forward. If you cannot hold a level pelvis for the whole set, regress to a solid 30-second Plank, or drop the knees to the floor and perform the up-down transitions from there. Elevating the hands on a bench also reduces the load significantly. When the hold feels easy and stable, progress by adding load with a Weighted Plank or by moving to Plank to Push-Up.
Stop the set immediately if you feel sharp pain in the wrist, elbow or front of the shoulder, or pinching in the lower back. Anyone with an existing wrist injury, shoulder impingement or recent abdominal surgery should clear this movement with a qualified professional before adding it to a program.
- Primary Focus
- Core
- Equipment
- Body weight
- Modality
- Strength
- Difficulty
- Intermediate
Alternative Exercises
Other Names for the Up-Down Plank
The Up-Down Plank is also known as:
- Commando Plank
Frequently Asked Questions
- Q: How is the Up-Down Plank different from a standard Plank?
A standard Plank is a static hold on the forearms, so the only task is resisting gravity. The Up-Down Plank adds a transition to and from the hands, which removes one support point at a time and forces the trunk to resist rotation as well. That is why it is logged in repetitions rather than seconds.
- Q: How many reps should I do?
Most trainees work in the range of 8 to 16 total transitions per set, alternating the leading arm. Quality of position matters more than volume, so end the set when the hips can no longer stay level.
- Q: Is this the same as a Plank to Push-Up?
They are the same transition pattern, but Plank to Push-Up is usually programed with a push-up added at the top, which shifts more of the effort to the chest and triceps. The Up-Down Plank keeps the emphasis on trunk stability.
- Q: Can beginners do this exercise?
Yes, with a regression. Performing the transitions from the knees, or with the hands elevated on a bench or box, keeps the technique intact while reducing the load, and most people can move to the full version within a few weeks.
- Q: How do I stop my hips from rotating?
Widen your feet to roughly shoulder width to increase the base of support, and squeeze the glutes hard throughout. A wider stance makes the anti-rotation task easier, and narrowing the feet again is a simple way to make the exercise harder later.