Here is my article about training your abs for that beautiful flat stomach. Most people think that you have to do endless crunches but that is not the case. Crunches only work the rectus abdominals but there are other abdominal muscle groups that need to be worked in order to have that flat shape and a balanced core. Find out more here.
. https://www.wholelifechallenge.com/why-endless-crunches-are-not-the-way-to-a-flat-stomach/