The best ab workout works many segments at once; it does not focus on just the abs. It is a misconception that in order to have ripped abs, we need to do ab crunches or use an ab machine. Television ads constantly sell products that are not effective at developing six pack abs. The best ab workout actually trains many segments of our body, giving an overall full body workout, which can be done by training with resistance, interval training, controlling what we eat and decreasing our stress.