This floor variation of the oblique crunch helps isolate the side abs and develop rotational strength — useful for athletic movement and core definition.
Instructions
- Lie on your right side with knees bent slightly and legs stacked.
- Place your left hand behind your head, keeping your right arm relaxed.
- Crunch upward, leading with your left elbow toward the ceiling.
- Pause briefly at the top, then lower under control.
- Complete all reps, then switch sides.