Tempo (3-0-1-1): 3-second descent opening the abdominal wall fully, explosive upward crunch, followed by a deliberate 1-second rotational twist at peak contraction, holding the squeeze before returning.
Execution Cue: Secure feet firmly on the decline bench rollers. Place hands lightly behind your ears without pulling on the cervical spine. Rotate your right ribcage toward your left hip bone on alternating repetitions.
Rest Interval: 60 seconds strict.
"Delavier Note: Rotation under a decline angle forces heavy recruitment of both the internal and external oblique slings, carving out lateral waistline definition and tightening the transverse abdominis."