Ask 10 people why they turn on skis, and nine will tell you it’s to control speed. They’re not necessarily wrong. Most skiers—even really good ones—turn to thwart the forces pulling them down the mountain. But the best skiers use their turns to generate power. The higher your skis’ edge angles, the tighter an arc they’ll carve. The tighter and more precise the arc, the more momentum you’ll generate throughout your turn. Your power output depends on your ability to keep your skis on edge throughout a turn and to minimize the time you spend on a flat, disengaged ski.