The Star Side Plank: A Complete Guide From First Rep to Advanced Variations
Also called Side Plank Leg Raise
Quick Intro
The star side plank is a core exercise performed by holding a side plank position while lifting the top arm and top leg into a star shape, balancing on one forearm and the outer edge of one foot.
Equipment Needed
A star side plank asks for nothing beyond floor space.
Why the Star Side Plank Matters
The star side plank asks the obliques and deep core stabilizer (transverse abdominis) to resist rotation while the side glute (gluteus medius) works overtime to keep the hips lifted and stacked with only one point of ground contact from the legs. The inner thigh (adductors) also engages to help control the raised top leg against gravity.
Lifting the top arm and leg is what pushes this exercise well beyond a standard side plank rather than just adding a small extra challenge. A standard side plank already balances on one forearm and the side of one foot, but the top leg rests on the bottom one and the top arm stays close to the body, which keeps the weight compact and easy to steady. Raising both away spreads the body’s weight out from that narrow base, turning an already-demanding hold into a balance and anti-rotation test.
The star side plank asks for muscular endurance and balance in equal measure, with strength close behind, since holding this shape on one forearm and one foot takes active control.
When to Do It
The star side plank fits well toward the end of a core-focused session, once a standard side plank is already comfortable and well controlled. Two to three sessions a week gives the obliques and hips enough recovery time between sessions.
- Existing shoulder or wrist sensitivity in the supporting arm. The supporting forearm and shoulder carry the full weight of the upper body through a less stable position once the top arm lifts away. Building a strong foundation with the standard Side Plank first is the safer approach until that arm can reliably support the load.
For most people who already handle a solid side plank, this is a rewarding way to build hip and core control.
Getting Ready
A minute of hip circles and a standard side plank hold on each side warm up the obliques and hips before asking them to support the body with even less contact.
Keep the hips lifted high and stacked directly over each other, since the raised top leg and arm make the narrow base harder to balance over.
Step-by-Step Instructions
1. Starting position. Set up in a standard side plank, forearm on the floor and hips lifted, feet stacked.
2. Raising the star shape. Lift your top arm straight up toward the ceiling and your top leg up and slightly out, forming a star shape with your body.
3. The hold. Hold this position for the target duration, keeping the hips lifted and stacked without letting them rotate forward or back.
Rest fully between holds on each side, then switch, treating each side as its own separate training effort.
How Many, How Often
| Level | Where you’re at | What to do |
|---|---|---|
| Beginner | New to the star position | 3 holds of 8 to 10 seconds per side, resting 1 minute between holds. Keeping the top leg lower makes the hold more manageable while learning. |
| Intermediate | 15 seconds per side comes easily | 3 to 4 holds of 15 seconds per side, raising the top leg higher to increase the balance demand. |
| Advanced | 20 seconds or more per side comes easily | Add a slow 2 second pause at the top of the star shape on entry, since duration alone stops adding much new demand at this point. |
Letting the hips rotate forward or drop toward the floor is the easiest way to make the hold feel more stable while quietly taking work away from the side glute and obliques that are supposed to be doing it, so hip position matters more here than how long the hold lasts.
Modifications and Variations
The star side plank has one clear easier step.
For an easier entry point, the Side Plank keeps the top arm and leg down for extra support, removing the balance demand this version adds by lifting both away.
Progression path: Side Plank → Star Side Plank
Raising the top leg gradually higher within this exercise is the clearest way to build toward a longer, more controlled hold.
Common Mistakes to Avoid
Letting the hips rotate forward or drop toward the floor. A dropped or rotated hip means the side glute has stopped doing its stabilizing job, which is the entire reason this exercise exists over a standard side plank. Keep the hips lifted and stacked throughout the hold.
Raising the top leg too high, too soon. Lifting the leg higher than the hips can currently stabilize turns the exercise into an unstable wobble rather than a controlled hold. Starting with a lower leg lift and raising it gradually keeps the hold clean.
Letting the supporting elbow drift out from under the shoulder. An elbow position that isn’t stacked under the shoulder places extra strain on the joint supporting the entire hold. Keeping the elbow directly under the shoulder distributes the load properly.
Holding the breath through the hold. Bracing hard to maintain the balance can lead to holding the breath without noticing. Steady, controlled breathing throughout keeps the hold sustainable.
After Your Set
Holding this shape with reduced support puts real, sustained demand on the side of the body and the hips well before the hold ends. A side-lying child’s pose, arms walked over to one side while kneeling, deepens the stretch through the waist that just resisted rotation. A standing groin stretch afterward, feet wide and leaning gently to one side, releases the inner thigh that helped control the raised leg.
Going Deeper
The star side plank is one of two harder progressions from the side plank, usually trained by anyone who already holds a strong standard side plank and wants a balance and anti-rotation challenge on top of it. It pairs naturally with a rotational core exercise like the Feet Elevated Russian Twist in the same session, balancing a held anti-rotation position with active controlled rotation.
The hips usually give out here well before the obliques run out of endurance, since stacking the hips with almost no lower-body contact is as much a balance skill as a strength one. The fix is lowering the top leg slightly the moment the hips start to rotate, treating hip position as the priority over how high the leg is raised.
Someone with a strong standard side plank already can expect eight seconds per side with the hips stacked within the first two to three weeks, and fifteen seconds per side with a higher leg lift somewhere in the five to seven week range.
How to Know You’re Improving
- Eight seconds per side held with the hips stacked and level
- Fifteen seconds per side completed with the top leg raised higher
- Twenty seconds per side in a row without the hips rotating
- A controlled 2 second pause held at the top of the star shape on entry
A hold counts as clean when the hips never rotate forward or drop, the supporting elbow stays under the shoulder and breathing stays steady throughout. Stacked, level hips for the entire hold say more about real progress here than how high the top leg reaches.
Muscles Worked
- Obliques (the muscles along the sides of the waist, holding the hips up with the top leg lifted away)
- Gluteus Medius (a smaller glute muscle at the side of the hip, raising and holding the top leg in the air)
- Transverse Abdominis (a deep core muscle that wraps around the torso like a corset, keeping the whole shape rigid on one point of contact)
- Adductors (the inner thigh muscles, stabilizing the bottom leg as the base narrows)
FAQ
How is a star side plank different from a regular side plank? Lifting the top arm and leg spreads the body’s weight away from its narrow base, turning an already-demanding hold into a balance and anti-rotation test.
Why do my hips shake or rotate during this hold? This usually means the top leg has been raised higher than the hips can currently stabilize. Lowering the leg slightly and rebuilding control from there restores a stable hold.
How long should I be able to hold a star side plank? Fifteen seconds per side with the hips stacked and level is a solid intermediate benchmark, though stable hip position matters more than raw duration.
What should my standard side plank look like before I add the star position? A comfortable hold of the standard version is the realistic foundation this exercise is built on, since lifting the top arm and leg asks for meaningfully more balance on top of that base.
Next in this series: the Feet Elevated Russian Twist, a rotational core exercise that pairs a controlled, moving contrast with this hold’s static anti-rotation focus.