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trunk flexion
Crunch
Search GoogleCrunch is a beginner trunk flexion exercise using bodyweight. It primarily trains abdominals. Use a repeatable setup, a pain-free range of motion, and a level of resistance that preserves the intended position.
- Primary
- abdominals
- Secondary
- obliques
- Equipment
- bodyweight
- Mechanic
- isolation
Setup
- — Prepare the bodyweight and clear the movement area.
- — Set your stance, grip, and starting position before beginning crunch.
- — Choose a variation and range that let you keep complete control.
Execution
- — Lift the shoulder blades by drawing the ribs toward the pelvis.
- — Reverse the movement smoothly and reset your position before the next repetition.
Breathing & coaching
- — Inhale during the easier or lowering phase.
- — Exhale through the working phase of the trunk flexion.
- — Lift the shoulder blades by drawing the ribs toward the pelvis.
- — Keep pressure and tempo even from side to side.
Safety & common mistakes
Progressions
- — Loaded or slower-tempo crunch
Regressions
- — Supported or reduced-range crunch