Exos | Formerly Core Performance

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Core Knowledge


Reverse Crunch - Stability Ball + Adduction

Starting Position

  • Wedge a physioball into stable vertical columns
  • Lie face up on the ball, arching the entire torso over the ball, with knees squeezing pad or foam roll and tucked toward waist
  • Hold onto a rack with both hands for stability


  • Pull your knees to your chest until you are fully resting on the ball
  • Slowly lower the hips, creating a slight arch in your back, stretching the abdominals
  • Repeat for the prescribed number of repetitions

Coaching Keys

  • Keep stomach tight, neck relaxed, knees squeezing foam roll

You Should Feel It

  • Working your abdominals and groin

Tags: Pillar strength, Abs, Groin, Physioball