Exos | Formerly Core Performance

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Core Knowledge


Leg Curl - 2 Leg Up 1 Leg Down (Stability Ball)

Starting Position

  • Lie face-up on the floor with your legs straight and your heels on top of a stability ball shoulder width apart.


  • Lift your hips until your body is in a straight line from your ankles to your shoulders.
  • Keeping your hips tall, pull the ball toward your butt with your heels.
  • Lift one leg off the stability ball and slowly extend your other leg to return the ball back out away from you.
  • When your leg is straight, place your other leg back on the ball and repeat, this time using your other leg to return the ball back out.
  • Continue for the prescribed number of repetitions.

Coaching Keys

  • Do not let your hips drop as you pull your heels toward your butt.
  • Keep your toes pulled up toward your shins.

You Should Feel It

  • Working your glutes, hamstrings, and lower back.

Tags: Strength, Glutes, Hamstrings, Lower Back, Pillar strength, Lower Body Pull, Physioball