Sculpt a Lean 6-Pack With the Help of These 30 Ab Workout Videos

We have a special treat for your core directly from Shaun T. He's a Beachbody super trainer and creator of Insanity and Shaun Week, and he knows how to strengthen and sculpt abs. This workout is short but specific, and the only equipment you need is a chair. Yeah, leave it to Shaun to find an exercise that will make your midsection quiver while sitting down.