Photograph by Dustin Snipes

Another core-scorcher, this exercise can be done anywhere. Sit on the floor and elevate and straighten your legs to form a V (a yoga mat will reduce pressure on your tailbone if you're uncomfortable). Slowly widen the V by allowing your straight legs to fall toward the floor as you simultaneously lower your back, making sure to not contact the ground. Keep your toes pointed straight. Just before your legs and back touch the floor, crunch back up to narrow the V while rotating your torso to one side. Untwist and return to your starting position. Alternate sides. If you want to keep up with Lysacek, repeat for four sets of 25. (Good luck with that.)