The reverse crunch is a basic core strengthening exercise that also improves stability throughout the lower back, hips and spine. By starting the movement in your lower body and bringing your knees to your chest, you protect your back and create a greater range of motion, which can help place more tension on your abdominal muscles.
Instructions
Lie on your back with your knees together and your legs bent to 90 degrees, feet planted on the floor. Place your palms face down on the floor for support.
Tighten your abs to lift your hips off the floor as you crunch your knees inward to your chest. Pause at the top for a moment, then lower back down without allowing your lower back to arch and lose contact with the floor.
Trainer’s Tips
Avoid doing the exercise too quickly. Instead, lower your legs slowly and in a controlled fashion.
Don't use momentum to bring your knees towards your chest. All movement occurs with your hips and abs.
Avoid lifting your neck at any point during the exercise.
