gripping the sides of the bench. Your legs should be extended with your heels on the ground. Crunch your abs to pull your knees up and back toward your chest." Aim for two sets of as many reps as ...

Place your feet up on a bench or sofa. Start as you did for the abdominal crunch, lying on the floor with your knees bent and arms across your chest with hands on opposite shoulders. Again look at ...

Ethier suggests doing the reverse crunch on a bench, but you can also do it on the floor if you have one of the best yoga mats. Watch Jeremy Ethier’s six-pack abs video Ethier’s video is ...