Exercise guide
Sitting Opposite Touch On A Chair
- Beginner
- Compound
- Rep-based
- Waist
This seated core exercise targets the rectus abdominis and obliques through a combination of hip flexion and spinal rotation. It is an effective beginner movement for improving midsection stability and coordination without the strain of floor-based crunches.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Sit on the edge of a sturdy chair or bench with your feet flat on the floor, hip-width apart.
- Place your fingertips lightly behind your ears with your elbows pointed out to the sides.
- Engage your core and sit tall, maintaining a neutral spine and lifted chest.
How to do it
- Exhale as you lift your right knee toward your chest while rotating your torso to bring your left elbow toward the rising knee.
- Inhale as you return to the starting position with control, ensuring your foot touches the floor softly.
- Repeat the movement on the opposite side, alternating between right and left for each repetition.
- Maintain a steady, rhythmic tempo, focusing on the squeeze in your midsection at the top of each rep.
Form checklist
- Rotate from your mid-back (thoracic spine) rather than just pulling your elbow across your face.
- Keep your chest open and avoid hunching your shoulders or rounding your lower back.
- Ensure your stationary foot remains firmly planted on the ground for stability.
- Keep your movements controlled to avoid using momentum to swing your legs.
Pro tips
- Focus on the mind-muscle connection by visualizing your ribcage moving toward your opposite hip bone.
- Exhale forcefully at the point of maximum contraction to deepen the engagement of the transverse abdominis.
Make it harder
- Hover both feet slightly off the floor throughout the entire set to maintain constant tension on the lower abs.
- Slow down the eccentric (lowering) phase to a 3-second count to increase time under tension for the hip flexors and quads.
Frequently asked
- What muscles does the sitting opposite touch on a chair work?
- The sitting opposite touch on a chair primarily targets the abs and obliques, and also works the glutes as secondary muscles.
- What equipment do you need for the sitting opposite touch on a chair?
- The sitting opposite touch on a chair requires no equipment — just your body weight.
- Is the sitting opposite touch on a chair good for beginners?
- Yes. The sitting opposite touch on a chair is a beginner-friendly movement and a strong foundation to build on.