Core · Bodyweight
90 Degrees Heel Touch
How to do the 90 degrees heel touch, 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
Lie on your back with your hips and knees bent to 90 degrees and your shins parallel to the floor. Reach one hand down toward the heel on the same side by crunching your torso slightly to that side, then return and repeat on the other side, alternating each rep.
- 1The obliques on the side you reach toward shortening and squeezing
- 2A short, controlled crunch rather than a long sit-up
- 3Your lower back staying flat against the floor
Common mistakes
- Pulling on your neck or jutting your chin forward
- Letting your feet drift or your legs swing for momentum
- Rushing the reps instead of feeling each side contract
Muscles worked
The 90 degrees heel touch mainly works the obliques, with the upper abs and lower abs assisting.
- ObliquesPrimary
- Upper AbsSupport
- Lower AbsSupport
- QuadsMinor
- Hip FlexorsMinor
Kovo programs the 90 degrees heel touch 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.