This is a quick abdominal workout used to build muscle and burn fat that can be added into any workout day or made its own separate abs day. With this workout you will train your abs 3 days a week, with each day performing the same routine either doing more sets or more reps. The abdominal exercises within this routine focus upon all of the core muscles so that you are getting an overall ab workout. With any ab routine you want to perform between 14 - 18 reps to stimulate the muscles for optimal growth and toning of the core. At the end of the routine you will focus on holding a plank exercise for as long as possible for 3 sets as the plank is a great workout to strengthen and hit your entire core. *** Note : You can add in some warm-up sets into each workout to loosen up your abdominal muscles. If these exercises do not suit your need, you can substitute other abdominal workouts into this routine.