Most people when they think of abs think of a shredded six-pack as they see on models. But that is only one part of four that make up the Core!
The six-pack that you can see is called the Rectus Abdominis and is the top most layer (superficial) of all the abdominal muscles that make up the Core. We all have a six-pack inside of us, and depending on your diet and exercise habits, will determine if you are able to show them off or not.
Our four layers are the Rectus Abdominis, the External Obliques, the Internal Obliques, and the Transversus Abdominis - each have their own very important role!