Core · Bodyweight
Sitting Knee Tuck on a Padded Stool
How to do the sitting knee tuck on a padded stool, 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 edge of a padded stool and lean your torso back, gripping the sides for support. Extend both legs out together, then pull your knees in toward your chest by contracting your lower abs. Extend back out under control without letting your feet touch the floor.
- 1Lower abs pulling your knees into your chest
- 2Constant tension as you extend the legs back out
- 3A controlled tempo on both the tuck and the extension
Common mistakes
- Swinging your legs with momentum
- Resting your feet on the floor between reps
- Rounding forward from your shoulders instead of your abs
Muscles worked
The sitting knee tuck on a padded stool mainly works the lower abs and hip flexors, with the upper abs and obliques assisting.
- Lower AbsPrimary
- Hip FlexorsPrimary
- Upper AbsSupport
- ObliquesSupport
- QuadsMinor
Kovo programs the sitting knee tuck on a padded stool 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.