Such is not divided into upper abdomen and lower abdomen, as some unfortunately still argue; at best we can identify the  flex belt  external and internal obliques. It can be stimulated by both sides to be able to recruit more muscle fibers, but even if we were to play a flawless work in the gym will only halfway if not also follow a good low-calorie diet. The calorie deficit in this case it is essential to be able to burn…