Exercise guide
Sitting Body Mobilization On Exercise Ball
- Beginner
- Compound
- Rep-based
- Back
- Chest
- Lower legs
- Shoulders
- Upper arms
- Upper legs
- Waist
This exercise improves spinal mobility and pelvic control while activating the deep stabilizers of the abs and obliques. It is an effective low-impact movement for warming up the core and relieving lower back tension.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Sit upright on the center of the stability ball with your feet flat on the floor, hip-width apart.
- Place the stability ball near a flat bench to use as a handhold if you require extra balance.
- Maintain a neutral spine with your shoulders stacked directly over your hips and hands resting on your thighs.
- Ensure your knees are bent at a 90-degree angle with your weight evenly distributed.
How to do it
- Inhale and slowly tilt your pelvis forward, creating a slight arch in your lower back.
- Exhale and tuck your tailbone under, rounding your lower back and drawing your navel toward your spine to engage the abs.
- Shift your weight side-to-side by lifting one hip toward your ribcage at a time to engage the obliques.
- Perform small, controlled circular motions with your hips in both directions, keeping your upper body as still as possible.
Form checklist
- Keep your feet firmly planted on the floor at all times.
- Ensure the movement comes from the pelvis and hips, not the shoulders or chest.
- Maintain an upright, tall posture without slouching.
- Move at a slow, rhythmic tempo to maintain full control over the ball.
Pro tips
- Imagine your pelvis is a bowl of water; focus on 'tipping' the water out of the front, back, and sides without moving your ribcage.
- Engage your pelvic floor and transverse abdominis throughout the movement to maximize internal stability.
Make it harder
- Lift one foot an inch off the floor while performing the pelvic tilts to significantly increase the balance challenge.
- Extend your arms straight out to the sides or overhead to raise your center of gravity and force more core activation.
Frequently asked
- What muscles does the sitting body mobilization on exercise ball work?
- The sitting body mobilization on exercise ball primarily targets the abs and obliques, and also works the deltoids, lats, serratus anterior, and triceps as secondary muscles.
- What equipment do you need for the sitting body mobilization on exercise ball?
- The sitting body mobilization on exercise ball uses stability ball.
- Is the sitting body mobilization on exercise ball good for beginners?
- Yes. The sitting body mobilization on exercise ball is a beginner-friendly movement and a strong foundation to build on.
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