what exercises focus on building abs
Sit ups ,crunches, lay on ur back and hold ur legs low for a while
*abs*. You could do sit-ups or crunches. Thats what i do and it works really good.
Shaun T Hip Hop Abs
Any exercise can be done and actually involve the abs. But when it comes to actual ab exercises to build the abs, I would recommend sit-ups and crunches with a good diet. And of course, cardio to keep your fat down to show them abs!