Your abs aren't the only thing showing when you lift your shirt up. To be honest, wanting  a flat stomach should not be the goal. Your core involves all your muscles in your midsection; the abdominis ( front), obliques/lats (side), and erector spinae (back). These muscles work together to stabilize your entire body. 

A strong core is the foundation to a strong body. 

This four week program provides a blue print to help you to strengthen the muscles in your core to help you stabilize and move efficiently. This is excellent for beginners and advance athletes who need to add a supplement to their current workout program.