The Best Abs Exercises Of All Time 05/06/2012 10:34 am ET 327 By Jessica Smith for Shape.com Twenty top fitness experts reveal their go-to move for a flat, sexy stomach. The Best Ab Exercises The Best Ab Exercises 1 of 20 Passé Abs Series "This move is one of my all-time favorite abs sculpting exercises," says Andrea Rogers, a former professional dancer, certified Pilates instructor, and creator of Xtend Barre. "It strengthens the abdominal muscles while developing stability of the pelvic lumbar region. You can also amp things up by increasing the tempo." To do it: Start seated, then lean back, resting your weight on your forearms (bending your elbows behind your body, fingers facing forward). Extend both legs straight out in front of you. Bend your right knee into a 'passé position' by pointing your right foot and pressing the inside edge of your right foot along the inside of your left knee. Draw your abs in tight and lift your legs off the mat and towards the chest (maintaining passé position). Bring your right knee all the way up to the right side of your chest and then lower your legs (still in passé) back down, about two inches from the floor (or as low as you can). Repeat eight times and then switch legs. Try to do eight reps on each side, for up to two sets. More from Shape.com: 20 Tricks to Get Toned, Tighter Abs Faster 7 Fat-Burning Moves that Tone Your Entire Body 10 Tricks to Get Motivated to Hit the Gym Share this slide: Andrea Rogers More: Fitness And Exercise Crash Course Abdominal Exercises Ab Workouts Abs Exercises FOLLOW HEALTHY LIVING facebook pinterest Suggest a correction GET THE NEWSLETTER Enter your email address to get top stories and blog posts emailed to you each day. CONVERSATIONS FOLLOW HUFFPOST HuffPost Healthy Living HuffPost Healthy Living HuffingtonPost Available on the App Store Android App on Google Play Get it at Blackberry App World HUFFPOST NEWSLETTERS Enter your email address to get top stories and blog posts emailed to you each day. Get top stories and blog posts emailed to me each day. Newsletters may offer personalized content or advertisements. Learn More.