Although fitness trainer buzzwords will also come up, this is how the khran posture makes a flat belly, best or not. But on the other hand, does not argue whether this may help build muscle thongboriwen front and side.
Although the fitness trainer to the conclusion that I can not pass this off as a way to make a smooth flat belly best or not. It can not be argued that this posture allows the abdominal muscles at the front and sides.
Although the trainer exercise are still inconclusive that tha crunch this is how to make the best flat belly. But don"t argue that this helps build abdominal muscles at the front and sides.