How to Do a Reverse Crunch?

Raise your legs so your thighs are perpendicular to the floor and your knees are bent at a 90° angle. Breathe out and contract your abs to bring your knees up towards your chest and raise your hips off the floor. Hold for a beat in this position, then slowly lower your legs back to the starting position.

Do reverse crunches really work?

The Reverse Crunch works all of the major abdominal muscles. ... Despite looking like six or even eight separate muscles, the rectus abdominis is actually one large muscle. Reverse Crunches work all of the muscle, with extra emphasis on the lower region.

What muscles do reverse crunch work?

The reverse crunch primarily works your rectus abdominis (your “six-pack”). The primary function of this muscle is to flex your trunk and spine. Takes strain off your neck. When doing sit-ups and crunches, people often pull their neck forward with their hands.