Step 1: Lie face up on the floor with arms and feet extended, grasping a stability ball with both hands.
Step 2: In one fluid movement, use your entire core to lift your arms and legs off the ground, keeping legs and arms straight the entire time.
Step 3: Transfer the ball from your hands to your feet and allow yourself to lower back down to the floor. Repeat for allotted amount of reps.
Modification (Beginner): Bend knees while performing move or ditch stability ball altogether.
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