These 5 Moves Will Make You Look Flat-Bellied from Every Angle

 

 

Your core is about so much more than just your abdominal muscles. It comprises the main abdominal muscle (rectus abdominus, a.k.a. the “six pack” muscle) that allows you torso flexion, or what happens when you sit up from lying down or bend over. Then there's your internal and external obliques, which are responsible for torso flexion in conjunction with rotation; this happens when you sit up and simultaneously twist to one side—like when you wake up and reach for the snooze button.