Sitting Side Crunch
Sitting Side Crunch Exercise Description
The Sitting Side Crunch is a bodyweight trunk exercise that emphasizes lateral flexion to target the obliques while maintaining a stable pelvis and neutral neck. Performed seated with heels grounded, you draw the rib cage toward the same-side hip to shorten the working side of the torso under control. The external and internal obliques are the primary movers; the rectus abdominis assists, while the transversus abdominis and deep spinal stabilizers help brace the trunk. Keeping the pelvis level and the opposite sit bone anchored ensures the movement happens through the torso rather than by tipping the hips. Expect a small, precise range of motion focused on quality contraction, smooth control, and steady breathing rather than speed or momentum.
- Muscle Groups: Abs, Obliques, Waist
- Target Muscles: External Obliques, Internal Obliques
- Assisting Muscles: Rectus Abdominis
- Stabilizing Muscles: Multifidus, Transversus Abdominis
- Body Area: Upper Body
- Body Parts: Core
- Body Surface: Side
- Body Symmetry: Unilateral
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Strength
- Functional Grouping: Trunk Lateral Flexors, Trunk Rotators
- Joint Involvement: Single-joint
- Muscle Location: Deep Side Abs, Side Abs
- Movement Direction: Lateral
- Muscle Position: Lateral
- Gender: Male
How To Do The Sitting Side Crunch Exercise
‘- Sit tall on the floor with knees bent, heels down, feet hip-width, and sit bones evenly weighted.
– Stack the torso: long spine, rib cage gently down, shoulders relaxed, chin slightly tucked.
– Place fingertips lightly behind ears or cross arms over chest; avoid pulling the head.
– Brace the abdominal wall as if preparing for a cough while keeping normal breathing.
– Exhale and side-bend to the right, bringing the right rib cage toward the right hip.
– Keep the left sit bone heavy, pelvis level, and eyes forward; avoid twisting or slumping forward.
– Pause briefly at the smallest comfortable range where the obliques clearly engage.
– Inhale and return to tall neutral, re-stacking ribs over pelvis without leaning back.
– Repeat to the left, matching the same controlled range and tempo.
– Common checks: no neck pulling, no shoulder shrugging, heels stay down, movement is smooth and pain-free.
– Stop the range if the pelvis tips, the opposite glute lifts, or the torso begins to rotate.
Sitting Side Crunch Tips
‘- Sit tall with knees bent, heels down hip-width, and both sit bones evenly weighted before you start.
– Stack your torso with a long spine, ribs gently down, shoulders relaxed, and chin slightly tucked.
– Place fingertips lightly behind your ears or cross your arms over your chest, and avoid pulling on your head.
– Brace your abdominal wall as if preparing for a cough while maintaining normal, steady breathing.
– As you exhale, draw the rib cage toward the same-side hip, focusing on a small, precise side-bend.
– Keep the opposite sit bone heavy and pelvis level so the movement comes from the torso, not from tipping the hips.
– Keep your eyes forward and avoid twisting or slumping as you side-bend.
– Pause briefly at the smallest comfortable range where you clearly feel the obliques engage.
– Inhale as you return to a tall neutral position, re-stacking ribs over pelvis without leaning back.
– Match the controlled range and tempo on both sides, keeping movement smooth, heels down, and free of neck pulling or shoulder shrugging.
Sitting Side Crunch Beginner Introduction
The Sitting Side Crunch is a seated bodyweight core exercise built around gentle, controlled side-bending of the torso. It is usually performed on the floor with the heels resting on the ground and the hips evenly weighted, so the effort centers on the waist rather than shifting through the legs. The upper body curves slightly toward one hip, bringing the ribs a bit nearer to that side, which strongly challenges the side abs with help from the front abs and supporting core muscles around the spine.
The movement stays small and deliberate, with attention to a long, upright posture and a relaxed, aligned neck. Hands often rest lightly behind the ears or across the chest, encouraging the midsection—not the arms or shoulders—to create the motion. The opposite hip remains grounded so the pelvis stays level while the trunk bends sideways. Breathing stays calm and continuous, reinforcing stability as the torso returns to a tall, centered position between repetitions on each side.