Lie on a mat with legs extended straight up, directly over your hip joint.
Place your hands on the ground palm down with your arms extended 4 to 6 inches out from your hips for support.
Contract your abdominal muscles and lift your hips up off the ground as high as you can, keeping your legs straight up.
Slowly lower back to the ground barely letting your hips touch before repeating the motion. Bringing your hips up and back down is one repetition.
The Reverse Crunch is a core exercise that focuses more on the lower abdominal region than most. By lifting the hips rather than the upper body, it forces the lower abdominals to work through a larger range of motion than in a traditional crunch or sit up. Coupled with more traditional abdominal exercises, this is a great move for building strength through the full range of motion for your abs. Because of the stabilization that the arms provide, this move also targets and tones the triceps and rear deltoids. This is an essential component for at home abs workouts, as this is otherwise an area that is especially difficult to engage and tone without equipment.