Exercise guide
Seated Side Bend With Arm Up On Chair
- Beginner
- Compound
- Rep-based
- Waist
This beginner-friendly isolation exercise targets the obliques and lateral core stabilizers by using a seated position to fix the pelvis and isolate the torso. Raising the arm increases the lever length, providing a deeper stretch and a more intense contraction of the side abdominal muscles.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Sit upright on a sturdy chair with your feet flat on the floor, hip-width apart.
- Engage your core and maintain a neutral spine with your shoulders rolled back.
- Raise your right arm straight up toward the ceiling, keeping it close to your ear.
- Place your left hand on your left thigh or the side of the chair for stability.
How to do it
- Inhale deeply and reach upward with your right hand to lengthen the spine.
- Exhale as you lean your torso directly to the left, bending at the waist while keeping your right arm extended.
- Inhale as you slowly return to the upright starting position using your obliques to pull you back.
- Complete the desired number of repetitions on one side before switching arms and repeating on the other side.
Form checklist
- Keep both sit-bones firmly planted on the chair throughout the entire movement.
- Ensure you are leaning strictly to the side; do not let your chest rotate toward the floor.
- Keep the raised arm fully extended and aligned with your ear.
- Move with a slow, controlled tempo to avoid using momentum.
Pro tips
- Imagine you are sandwiched between two panes of glass to ensure your movement stays perfectly lateral.
- Focus on the 'mind-muscle connection' by consciously squeezing the obliques on the side you are leaning toward.
- At the bottom of the bend, reach slightly further with the raised arm to maximize the eccentric stretch on the opposite side.
Make it harder
- Hold a light dumbbell or a water bottle in the raised hand to increase the resistance.
- Incorporate a 2-3 second isometric hold at the point of maximum lateral flexion.
Frequently asked
- What muscles does the seated side bend with arm up on chair work?
- The seated side bend with arm up on chair primarily targets the abs and obliques, and also works the erector spinae as secondary muscles.
- What equipment do you need for the seated side bend with arm up on chair?
- The seated side bend with arm up on chair uses dumbbell.
- Is the seated side bend with arm up on chair good for beginners?
- Yes. The seated side bend with arm up on chair is a beginner-friendly movement and a strong foundation to build on.