The minute we took the superlight yet sturdy TendoFlex out of the box, we were hooked. With 19 maneuvers adopted from Pilates and yoga, we got flat abs, a slimmer waistline and a satisfying stretch, all without hitting the gym. A full run-through took us only 17 minutes. And at under two pounds, it’s so portable we could sneak in a quick stretch at the office and bring it home again. No sweat. Long, lean muscles, a great stretch and killer abs all in one!? A fitness-junkie’s dream.