Ab wheel is one of the simplest ab exercise equipment. Occupying negligible space compared to other exercise equipment, it is a must for people wanting to develop six packs. Ab wheels are capable of supporting easy to complicated types of ab exercises also. Just small adaptations are needed to bed one in the wheels to change its utility. It is a very good instrument for shaping up your abdomen and outer oblique. It can easily beat any other equipment in the gym for six pack abs. It is highly beneficial to use. Once you get used to it, slowly you will feel the change in your physique. It will also strengthen your body as a whole.
Aerobics and diets are not sufficient for getting six pack abs. Along with aerobics and diet, you will have to do the exact exercises that will affect your abdomen greatly. Do such exercises that are tough enough that you cannot do them more than ten times per set. For muscle growth, this is the best way. Low repetition sets are the most effective ones for muscle growth. More number of repetitions helps build strength and not muscles.
Unless you are a sporty person who needs great stamina, you need not do more than 10 reps per set. There are four principles of muscle growth overload, progressions, specificity and adaptation. It means that you will progress further only by making the exercise more difficult or by switching to a completely new one that should be more intense. With ab wheel exercise routine, you can do many different and difficult abdomen exercises. With crunches and sit ups, the problem is that they soon become too easy for you. It will not help in building muscles further. Thus, you will need tougher exercises after that when your body gets used to it.