The Ab Wheel, a simple piece of equipment to strengthen the abdominal area. You can find the Ab wheel online or at your local fitness store for under $9.00. This thing has been around for years, yet I rarely see anyone using them.
While using the Ab Wheel you engage muscles thought your midsection, erector spinae, hip flexors and extensors. This is an exercise that will strengthen your core, but does not burn fat. Be sure to get your cardio in if you are trying to build magazine cover abs.
To begin, put a hand on each grip, kneel down and combine your knees on the floor. Be sure to lock your arms while holding the ab wheel at your knees. Slowly, roll the wheel out away from your knees until your arms are perpendicular with the floor.
Avoid touching the floor. Keep your entire body 2-5 inches above the floor. Return to the starting position by pulling in with your abdominal muscles and arching your back. Keep your arms straight and use your core muscles to return to the starting position again. Breathe in at the start and exhale on the way down. 10-12 repetitions equal one set. Get started!
For a good visual on how to perform this exercise, view this video.