The hanging ab crunch is just another tool to that you can use to attack those ab’s. This is a more advance movement, so I only recommend it to those that have a strong lower back and have been doing an array of abdominal exercises. In addition, since you will be holding on to a bar or pull-up bar, your forearms may get tired, so that is something to take into consideration. If you are ready to go, then watch this video. This personal trainer does 50 hanging crunches and then does 20 bicycle hanging crunches at then with a quick isometric hold at the end. Check it out, it is a great demonstration of this exercise: Hanging Crunches Video

Thanks,
Oregon Personal Trainer