Ab, or core training, is one of most sought out topics in the fitness population. In an oversimplified statement, a strong core is essential for almost every movement we make, and can act as a limiting factor for many athletes. Your oblique muscles (side abdominals) help you bend from the side or twist your torso. Strong obliques support the lower back, warding off back pain and posture problems. Improved posture, thanks to strong obliques, slims your waist. Try the exercises in this article!