The most effective core exercise you've (probably) never tried is... Band-Assisted Leg Lowering<br /><br />(Doesn't look so tough, huh? Well, if you're not shaking like a leaf and cursing our name when you're doing it, then you should check your form!) <br /><br />Learn more about EXACTLY how to perform it in this video from Girls Gone Strong Owner Molly Galbraith. <br />
