Cable crunch

Cable crunch

 

Cable crunch

Kneel under a high pulley that has a rope attachment and grab the rope and lower it until your hands are next to your face. Lean slightly forward to hyper-extend your lower back. That is the starting position. Now, as you exhale, contract your abs and flex your waist. Your elbows should go towards the middle of your thighs. Now, as you inhale, slowly return to the starting position. Keep your hips stationary and constant tension on your abs.