Maintaining a healthy diet is essential when it comes to achieving a six pack. Foods that are low in fat, as well as natural foods, are best. Giving the abdominal muscles time to relax in between workouts helps to heal and restore the muscles. This allows the six pack to form naturally without causing unnecessary strain to the body. A variety of exercises, not just crunches and sit-ups, helps to shape all the muscles in the abdominal area.