Anchor TRX securely overhead. Sit facing anchor, grip handles underhand, lie back with knees bent and arms extended, core braced.

1. Brace core and engage abs.
2. Exhale as you crunch shoulders off floor while curling handles to shoulders.
3. Keep elbows close to sides during curl.
4. Squeeze abs and biceps at top.
5. Inhale and slowly extend arms while lowering shoulders to floor.
6. Maintain strap tension throughout.
7. Repeat for reps with control.