Angie PellitierStealth workout: Try the couch-potato friendly 2-for-1 Plankverified_publisherThe Globe and Mail - Kathleen TrotterDouble up with this ab workout that’s easy enough to do while watching Game of Thrones. 1. Start in a plank. Then rock your right hip so it drops slightly toward the floor. Then switch and drop your left hip bone slightly toward the floor. Use the muscles all along the sides of your waist to do the …