This exercise targets the abs, obliques, gluteals, and hip stabilizers. Additionally, it will put your balance to the test. In regards to ski conditioning, this exercise is great for improving stability while skiing, especially when one ski looses contact with the ground. This is an intermediate/advanced level exercise. Do 1-3 set for 8-15 reps for each leg. Note: Please consult your physician before begging any new form of exercise. To download a full ski conditioning video program for under $10, click here.