Grasp handles slightly to front and stand on foot bar with knees slightly bent and hips against pad.
With back straight, raise legs as high as possible by flexing hips. Return and repeat.
Exercise is typically performed without added resistance. Rectus Abdominis and Obliques only contract dynamically if actual waist flexion occurs. With no waist flexion, Rectus Abdominis and External Oblique will only act to stabilize pelvis and waist during hip flexion. It is necessary to raise legs higher than what is shown before waist flexion occurs; see Lever Vertical Leg-Hip Raise. Also see Spot Reduction Myth and Lower Ab Myth.