Sure the abs are sexy, and the obliques earn you street cred, but neither of them comes close to your TVA (Transverse Abdominis). Mostly because it’s the foundation to your entire core which means all of your hopes for a strong, functional and even sexy six pack depends on how well you train it.
You won’t find many magazines with feature articles on how to train your TVA and good luck finding a TVA machine at your local gym. Don’t worry though you don’t need any of that junk. All you need is a bit of rope or string and this video: