I am a teenage breakdancer and due to a shoulder injury i am not able to exersise as much as i used to so i am gaining weight and i would like to have abs my freind who has abs said running is the next best thing to do rather than earing right which is not an option for me i heard squats help for lower abs which is my main problem most of my fat is lower stomache wher the belly button my upper abs are fine but i was wondering if biking would substatute for running with the whole abs issue so if any one has any better suggestions or answers they will greatly be appreciated