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Exercises/Obliques/Incline Twisting Crunch

Exercise

INCLINE TWISTING CRUNCH

IntermediatePrimaryObliquesSecondaryAbs

Form cues

Hook feet under the foot bar and lie on the incline bench, hands behind neck.
Flex and twist the waist to bring one elbow toward the opposite knee.
Return until shoulder blades contact the incline board.
Alternate the twist direction each rep.
Avoid pulling on the neck — let the obliques do the work.

A decline bench crunch with a rotation at the top of each rep, alternately driving one shoulder toward the opposite knee. Targets the rectus abdominis through the crunch motion and the obliques through the twist.


Step-by-step technique

01

Set Up on the Incline Bench

Hook your feet under the foot bar of an incline bench and lie back with hands lightly placed behind your neck.

02

Twist and Crunch to One Side

Flex your waist and twist your torso to bring one elbow toward the opposite knee. Squeeze the oblique at the top.

03

Lower and Alternate Sides

Lower yourself back until your shoulder blades contact the bench. Immediately twist to the other side on the next rep. Continue alternating for the desired reps.


What goes wrong — and why

Mistake

Rotating arms across the body instead of the torso

Moving only the arms creates the illusion of rotation without engaging the obliques.

Drive the rotation from the shoulder and torso; the elbow should reach toward the opposite knee via trunk rotation.

Mistake

Pulling on the neck with clasped hands

Neck pulling strains the cervical spine and removes abdominal work.

Hands behind the temples only; never interlock and pull — the abs must do the work.

Mistake

Going too fast to generate reps

Speed-based reps sacrifice the oblique contraction quality.

Take 1 second to rotate to the contracted position and hold briefly before lowering for 2 seconds.


Adaptations for every level

Regression

Flat Floor Twisting Crunch

Perform the rotating crunch on the floor without the decline angle to learn the movement pattern.

Variation

Incline Twisting Sit-Up

Extend the range to a full sit-up with rotation for greater rectus abdominis and oblique demand.

Progression

Weighted Incline Twisting Crunch

Hold a weight plate or medicine ball at the chest while adding the twist for progressive overload.