So, hands up if you saw the NPR interview (what felt more like an infomercial) last week, “Flattening the ‘Mummy Tummy’ with 1 Exercise, 10 minutes A Day.” I first heard about it when I was at a fitness supply store doing some pricing for the new studio.  When learning of my fitness specialty, the sales manager excitedly exclaimed, “Hey, did you know that there’s one exercise that can totally fix that pooch moms have after birth?  I was listening …