Position hands on floor shoulder-width apart under shoulders in high plank with shins on stability ball, body straight from head to heels.

1. Engage core and lift hips to ceiling, rolling ball forward to form inverted V with straight legs.
2. From pike, bend elbows to lower head toward floor in front of hands, keeping elbows at 45 degrees.
3. Push through hands to extend arms and return to pike position.
4. Lower hips controlled, rolling ball back to plank with straight body.