Core · Bodyweight
Seated Under Knee Clap on a Chair
How to do the seated under knee clap on a chair, the muscles it works, and the mistakes to avoid. Pulled straight from the Kovo app's exercise library.
- Equipment
- Bodyweight
- Difficulty
- Beginner
- Logged as
- Reps
- Movement
- Flexion
- Mechanic
- Isolation
How to do it
Sit on the edge of a chair and lean back slightly for support. Lift one knee toward your chest and clap your hands underneath the raised thigh, then lower the leg and repeat on the other side, alternating in a steady rhythm.
- 1Feel your lower abs and hip flexors lift each knee high enough to clap
- 2under it
- 3Keep your core engaged so your torso stays steady
- 4Coordinate the clap at the top of each knee raise
Common mistakes
- Don't lean back excessively to swing the knee up
- Avoid rounding your lower back during the raise
- Don't lose tension by resting between reps
Muscles worked
The seated under knee clap on a chair mainly works the lower abs and hip flexors, with the upper abs assisting.
- Lower AbsPrimary
- Hip FlexorsPrimary
- Upper AbsSupport
- ObliquesMinor
- QuadsMinor
Kovo programs the seated under knee clap on a chair 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.