Everyone, it seems, has an opinion on the best way to train abs. Whether it’s doing bodyweight ab exercises for higher reps to keep the midsection tight and trim, or weighted moves for lower reps to build up the bricks of the six-pack, the differences are as diverse as the qualifications of the fitness professionals who espouse them. They can’t all be right, can they? Training abs differs from the way you approach training other muscle groups. For one, abs have a higher ratio of slow- to fast-twitch muscle fibers than most other muscle groups. What’s more, even a little body fat can blur your ab definition, so any approach must also address diet. In my experience, there are a number of smart ways to approach your ab training, and others that don’t seem to be as effective. Bodybuilding.com asked me to compile a list of the most important ones, which we’re collectively calling “laws.” Hopefully you can walk away with more than a few nuggets that’ll enable you to train smarter on ab day. To read more click here!