1
Sit on the floor with legs extended or bent, torso upright, hands positioned behind head or across chest, spine in neutral alignment with core engaged
2
Engage core by drawing navel toward spine, maintain neutral neck position by keeping chin slightly tucked, prepare for controlled spinal flexion movement
3
Slowly lower torso backward by extending the spine in a controlled manner, allowing the abdominal muscles to lengthen eccentrically, maintain seated position with legs stable
4
Contract abdominal muscles to flex spine and bring torso forward and upward toward thighs, return to starting upright seated position with controlled movement, squeeze abs at the top of the movement