Seated Back Twist
- Target muscle
- —
- Equipment
- Body weight
- Body part
- Waist
- Type
- Strength
The seated back twist is a bodyweight rotational exercise that targets the obliques and deep spinal rotators of the waist. Performed seated on a bench, chair, or the floor, you rotate your torso from side to side against gravity and your own body weight. It is a practical way to build rotational core strength and improve spinal mobility.
How to do the Seated Back Twist
- 1Sit upright on a bench, chair, or the floor with your feet flat and your knees bent at roughly 90°. Keep your hips square and facing forward throughout the movement.
- 2Cross your arms over your chest, or extend them straight out in front of you at shoulder height — whichever feels more stable.
- 3Sit tall, lengthen your spine, and brace your core lightly so your lower back stays neutral rather than rounded.
- 4Exhale and rotate your torso to the right as far as you can without letting your hips shift or your lower back collapse. Lead with your chest, not your shoulders.
- 5Pause briefly at the end of your range of motion, feeling the stretch in your left side and the contraction in your right oblique.
- 6Inhale and rotate smoothly back through the center.
- 7Continue to the left side in the same controlled manner, pausing at the end range before returning to center.
- 8Alternate sides for the target number of repetitions, keeping the movement deliberate and the pace steady throughout.
Form tips
- Keep your hips anchored and facing forward — if your hips rotate with your torso, the obliques are no longer doing the work.
- Move through your full comfortable range of motion rather than rushing through short, choppy reps. Depth and control matter more than speed.
- Maintain a tall, neutral spine the entire time; avoid rounding your lower back or collapsing forward as you rotate.
- Breathe with purpose: exhale on the rotation, inhale on the return. This also helps stabilize your core at the right moment.
Common mistakes
- Letting the hips rotate along with the torso, which takes the work off the obliques and reduces the effectiveness of the movement.
- Rounding the lower back, which puts unnecessary stress on the lumbar spine and shortens the usable range of rotation.
- Using momentum to swing from side to side instead of using controlled muscle contractions, which reduces time under tension and can strain the spine.
- Dropping the chin to the chest or hunching the upper back, which compresses the thoracic spine and limits rotational range.
- Moving too fast and skipping the brief pause at end range, where the greatest oblique activation occurs.
Frequently asked questions
What muscles does the seated back twist work?
The seated back twist primarily works the obliques (internal and external) and the deep spinal rotators, which together make up the rotational musculature of the waist. The transverse abdominis also engages to stabilize the core throughout the movement.
How is the seated back twist different from a Russian twist?
Both exercises rotate the torso, but the seated back twist keeps your feet flat on the floor and emphasizes a full, controlled rotational range of motion. The Russian twist typically involves lifting the feet and holding a weight, making it more demanding on hip flexors and lower abs.
How many reps and sets should I do?
Two to three sets of 10–15 repetitions per side is a solid starting point for most people. Because it is a bodyweight movement, higher rep ranges with strict form tend to produce better results than rushing through fewer reps.
Can I do this exercise if I have lower back pain?
Light rotational work is often used in rehab settings to restore core mobility, but back pain varies widely in cause and severity. If you have an existing injury or chronic discomfort, consult a physiotherapist before including spinal rotation exercises in your routine.
Where should I feel this exercise?
You should feel a stretch on the side opposite your direction of rotation and a contraction along the side you are twisting toward. If you feel strain in your lower back rather than engagement in your obliques, check that your spine is tall and neutral and that your hips are staying square.
