You've been obsessing over abs or flat stomach for the entire year. That ends now! Because you now have a great 5 min workout which you can do every day… and why not a few times per day? Why's this 5 min plan so damn effective? Because it targets your entire abdominal wall, especially the transverse abdominis—the midsection muscle that pulls in your belly like a corset. And this sexy abs/flat stomach workout does more than just firm your core: You'll feel it (and see results!) in your should...