The Weighted Twist exercise works your abs, obliques, butt, and legs.
-Okay, for this move, I want you to go into a semi squat and this is a simple trunk twist. Only move your trunk. We're working the entire trunk area, the core, and you need to really, really squeeze. Turn to the side. Turn to the side. Do about 30 repetitions in total. I'm already feeling it. You should feel it about now and that's about 10 to 12 repetitions, and just keep going to the 30 until you're finished.