This is a terrible idea. The only way this would sufficiently work the abdomen is if you started to swing your torso with the weights. In turn, the swinging motion puts a lot of stress on your shoulders and can easily damage a rotator cuff.
exercise The 100 Workouts Book is for everyone who wants to stay active, get fit, build muscle tone and/or shed extra weight in the home environment without acquiring any extra equipment. Different workouts, some are more challenging and some areREAD MORE