Core · Bodyweight
Sitting Floor Side to Side Leg Raise in Out Crunch
How to do the sitting floor side to side leg raise in out crunch, the muscles it works, and the mistakes to avoid. Pulled straight from the Kovo app's exercise library.
- Equipment
- Bodyweight
- Difficulty
- Intermediate
- Logged as
- Weighted reps
- Movement
- Flexion
- Mechanic
- Isolation
How to do it
Sit on the floor leaning back slightly on your hands with your legs lifted and extended in front of you. Sweep both legs side to side, then draw your knees in toward your chest and extend them back out for an in-and-out crunch. Keep your core braced and feet off the floor throughout.
- 1Your lower abs working to keep your legs hovering and moving
- 2Your obliques firing as the legs sweep from side to side
- 3A strong crunch through the midsection as the knees tuck in
Common mistakes
- Resting your feet on the floor between reps
- Rounding and straining your lower back as you lean back
- Swinging the legs with momentum instead of controlling them
Muscles worked
The sitting floor side to side leg raise in out crunch mainly works the lower abs, obliques, and hip flexors, with the upper abs and quads assisting.
- Lower AbsPrimary
- ObliquesPrimary
- Hip FlexorsPrimary
- Upper AbsSupport
- QuadsSupport
- AdductorsMinor
Kovo programs the sitting floor side to side leg raise in out crunch for you and tracks it every session.
We build your whole program, drop the right lifts into each workout, and adjust your weights as you get stronger. Free on iOS and Android.
More abs & core exercises
- How to do the ab wheel rollout
- How to do the ankle tap plank
- How to do the ankle taps
- How to do the resistance band dead bugs
- How to do the resistance band pallof press
- How to do the rollout
Last reviewed June 2026.