Exercise guide
Seated Circle Leg Crunch
- Intermediate
- Compound
- Rep-based
- Waist
The Seated Circle Leg Crunch is a dynamic core exercise that targets the entire abdominal wall and obliques while challenging the hip flexors and adductors through a rotational movement. It builds functional core strength and hip stability by combining a leg lift with a circular crunching motion.
Reviewed by the Crucible team · Updated June 2026
Muscles worked
Setup
- Sit on the edge of a flat bench with your legs extended and feet together.
- Grip the sides of the bench slightly behind your hips for stability.
- Lean your torso back at a 45-degree angle, keeping your spine neutral and chest lifted.
- Lift your heels a few inches off the floor to find your balance point.
How to do it
- Inhale and begin moving your feet in a wide circular motion, sweeping them out to the side and then up toward your torso.
- Exhale as you pull your knees toward your chest at the peak of the circle, performing a crunch.
- Continue the circle by extending your legs back out to the starting position on the opposite side.
- Maintain a slow, controlled tempo, completing half the reps clockwise and half counter-clockwise.
Form checklist
- Keep your inner thighs squeezed together throughout the entire movement.
- Avoid rounding your shoulders or collapsing your chest forward.
- Ensure your lower back remains stable and does not arch excessively.
- Initiate the movement from your core rather than just swinging your legs.
Pro tips
- Imagine your toes are a pen and you are drawing the largest, smoothest circle possible on a wall in front of you to maximize oblique engagement.
- Maintain constant tension in your quads and glutes to keep your legs rigid and controlled throughout the rotation.
Make it harder
- Perform the circles with completely straight legs throughout the entire rotation to increase the lever length and difficulty.
- Slow down the tempo to 4-5 seconds per full circle to significantly increase time under tension.
Frequently asked
- What muscles does the seated circle leg crunch work?
- The seated circle leg crunch primarily targets the abs, adductors, and obliques, and also works the quadriceps as secondary muscles.
- What equipment do you need for the seated circle leg crunch?
- The seated circle leg crunch requires no equipment — just your body weight.
- Is the seated circle leg crunch good for beginners?
- The seated circle leg crunch is rated intermediate. Build a base with simpler variations first, then progress to it with light load and strict form.
Related exercises
- Criss Cross Leg RaisesIntermediate · abs, adductors, and obliques
- Front Plank To Toe TapIntermediate · abs, adductors, erector spinae, hamstrings, obliques, pectorals, and trapezius
- Kneeling Forward Hip CirclesBeginner · abs, adductors, erector spinae, glutes, hip flexors, and obliques
- Lying Abduction Leg Raise On FloorIntermediate · abs, adductors, and obliques