The last move in the dynamic warm-up mixes a little core work into the stretch. "For a skier, their core is essential to staying stable throughout their quick movements," says Steve Rosga, another one of Moltzan's trainers. "We incorporate core work into almost every move."
How to do it: Lie faceup with your arms extended to each side. Lift both legs straight up over your hips. Keeping your legs pressed together as one unit, slowly lower them to the left as far as you can. Use your abdominal muscles to pull them back to center and then lower to the right.
Training tip: Your shoulders should not come off the ground during the entire movement. Only lower your legs as far as you can maintain control.