Exos | Formerly Core Performance

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Core Knowledge


Crunches (Stability Ball)

Starting Position

  • Lie with your back arched over a stability ball holding a weight behind your head.
  • Place your feet flat on the floor.
  • Your butt and back should drape over the ball so you feel a mild stretch in your abs.


  • Keeping your abs tight, lift your shoulders off the ball to curl your trunk up and forward.
  • Lower back down and repeat for the prescribed number of repetitions.

Coaching Keys

  • Use the plate to help support your head and think about rolling your chest toward your belly button.

You Should Feel It

  • Working your abdominals.

Tags: Pillar strength, Weight Plates, Abs, Physioball