Exos | Formerly Core Performance

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Core Knowledge


Rotational Crunch (Stability Ball)

Starting Position

  • Lying face up, body arched over the ball, holding a weight behind and supporting your head


  • Drape body over ball, feeling mild stretch in your abdominals
  • Curl trunk and pelvis together while keeping belly button pulled in, and rotating your trunk on the way up
  • Return to start position and repeat, rotating to the opposite side
  • Repeat for prescribed number of repetitions

Coaching Keys

  • Keep stomach tight and neck relaxed

You Should Feel It

  • Working your abdominals

Tags: Pillar strength, Stability, Weight Plates, Abs, Physioball