Core · Bodyweight
Ab Tuck
How to do the ab tuck, 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 floor or a bench leaning back slightly with feet lifted and knees bent. Pull your knees in toward your chest by crunching your abs, then extend your legs back out without letting your feet touch down.
- 1Feel your abs crunch as you tuck the knees in
- 2Keep tension on the core the whole set
- 3Control the legs back out instead of dropping them
Common mistakes
- Don't rely on momentum to swing the legs in
- Avoid rounding into the lower back
- Don't let your feet touch the floor between reps
Muscles worked
The ab tuck mainly works the lower abs and upper abs, with the hip flexors and obliques assisting.
- Lower AbsPrimary
- Upper AbsPrimary
- Hip FlexorsSupport
- ObliquesSupport
- QuadsMinor
Kovo programs the ab tuck 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.