Exercise guide
Seated Alternate Back Rotation On A Chair
- Beginner
- Compound
- Rep-based
- Back
This exercise improves thoracic mobility and targets the obliques by using controlled spinal rotation. It is highly effective for relieving mid-back tension and building core stability from a seated position.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Sit upright on a stable chair with your feet flat on the ground, hip-width apart.
- Engage your core and maintain a neutral spine with your shoulders relaxed.
- Place your hands lightly behind your head with elbows out, or cross your arms over your chest.
How to do it
- Exhale as you slowly rotate your torso to one side, leading with your ribs and shoulders while keeping your hips facing forward.
- Hold the rotation for one second at your comfortable end range, feeling the contraction in your obliques.
- Inhale as you return to the center starting position with a controlled tempo.
- Repeat the movement on the opposite side, alternating back and forth for the desired repetitions.
Form checklist
- Keep both sit bones firmly planted on the chair; do not let your hips shift or lift.
- Ensure the rotation comes from your mid-back rather than just pulling with your neck or elbows.
- Maintain a tall posture throughout, avoiding any slouching or leaning to the side.
- Keep your knees pointing straight ahead and stationary to isolate the upper body.
Pro tips
- Imagine a string pulling the crown of your head toward the ceiling to create space between your vertebrae during the twist.
- Focus on 'wringing out' your midsection like a wet towel to maximize the engagement of the internal and external obliques.
Make it harder
- Hold a light weight or a medicine ball against your chest to add rotational resistance.
- Extend your arms straight out to the sides in a 'T' position to increase the lever arm and challenge your core stability.
Frequently asked
- What muscles does the seated alternate back rotation on a chair work?
- The seated alternate back rotation on a chair primarily targets the abs and obliques, and also works the erector spinae, glutes, and quadriceps as secondary muscles.
- What equipment do you need for the seated alternate back rotation on a chair?
- The seated alternate back rotation on a chair requires no equipment — just your body weight.
- Is the seated alternate back rotation on a chair good for beginners?
- Yes. The seated alternate back rotation on a chair is a beginner-friendly movement and a strong foundation to build on.