1
Sit on the abdominal crunch machine with back firmly against the padded support. Position feet flat on the floor or footrest. Grasp the handles beside your head with both hands.
2
Adjust the machine seat height so handles are at mid-chest level. Sit upright with neutral spine alignment. Ensure your lower back maintains contact with the backrest throughout the movement.
3
Slowly extend your torso backward against the resistance by opening your abs and allowing your chest to move away from your hips. Maintain controlled movement without bouncing.
4
Powerfully flex your abdominals to bring your chest toward your hips by crunching forward against the machine resistance. Squeeze at the top of the contraction, then return to starting position in a controlled manner.