I like doing reverse crunches because they work my abs hard!
1. Lie down on the mat or the floor. Lift your legs so your thighs are perpendicular to the floor, and your knees are bent at a 90 degree angle.
2. Place your hands, palms fading down, where your buttocks are.
3. Without changing the angles of your legs from step 1, and without using momentum, exhale, and lift your butt up, bringing your knees closer to your chest.
4. Inhale, and gently lower your legs back down to the position in step 1.
I am not YET a certified personal trainer. The moves I do here are only what I personally like to do. Please consult with your Dr. or a certified trainer before you start doing an exercise regimen. If you feel any pain or discomfort, please listen to your body and stop, and seek professional guidance.