With this one move, you'll burn calories and build muscle at the same time.
Split-stance thrusters: This move will require a bit of multitasking, but don't let that dissuade you. Besides, if you want to be toned from head to toe, you're going to have to work your entire body. Combining moves just saves you time.
(Get more total body workouts from Women's Health's Look Better Naked DVD.)