Cross-knee crunch: how to do it and what it works

Trunk flexion and rotation bringing the knee across.

Image: start and end of the movement.

How to do it

Core exercise that combines bringing one knee in with a controlled rotation of the ribs.

Form. Keep your lower back organized, bring your ribs and hip together without pulling on your neck and alternate both sides.

Common mistake. Pulling on your head, speeding up to use momentum, or turning only your arms.

Obliques · Bodyweight

The muscles listed are an editorial reference, not a measurement. Adjust the range and the load to what feels comfortable.

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