Honestly who trained like to abs. I usually let them yet, turn towards the end of the workout like. Everyone has probably as his favorite exercises. But it's still a good feeling when the stomach hurts - :). Especially when the fat after the diet melts slightly and there was still something. One reads indeed like the Web, let it be and would rather train with this device, or for this exercise. But that's not the point. But I love it here also fun at home after Waterrowertraining, this still attach. Dear every day with a bit of fun rather than never. Conclusion: Well thought-out quality and sets the mood.