Lie flat on back, knees bent, feet flat.

Hands lightly behind head, elbows wide.

Engage core. Exhale, lift shoulders off floor.

Simultaneously twist torso, bringing one elbow (e.g., right) towards opposite knee (left).

Focus on lifting shoulder across, not just elbow.

Inhale, slowly lower back to start.

Repeat on other side (left elbow to right knee).

Continue alternating.