Exos | Formerly Core Performance

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Core Knowledge


Lying Opposites (Stability Ball)

Starting Position

  • Lying on your stomach on top of a physioball


  • Elevate the right leg and left arm toward the ceiling while extending the back
  • Return to start position and switch sides
  • Repeat for prescribed number of repetitions

Coaching Keys

  • Keep arms and legs straight
  • Do not lift arms or legs above parallel to the ground

You Should Feel It

  • Working your shoulders, glutes, and back

Tags: Upper Back, Injury Prevention, Lower Back, Stability, Physioball