Balance exercises that mimic the movements of skiing will help you recover on the slopes when your center of gravity is off-kilter, White says. The simplest are lateral jumps. Stand alongside a straight line on the floor with your shoulders perpendicular to it, your feet spread waist-width apart, and your knees bent at a 45-degree angle. Jump sideways over the line, lifting your feet high. After landing, jump back across the line for one repetition. Do three sets of 10 to 12 reps. For a bigger challenge, jump over a traffic cone or box. Or set up two boxes of different heights and jump back and forth between them.