The quad axel is the most difficult skill ever performed in figure skating – and the only person in the world who has ever landed one in competition is Ilia Malinin. If you haven't heard his name before, you will soon. The 21-year-old, who recently won his fourth straight national title, is the heavy gold medal favorite for this year's Olympics, because he has mastered the "quad" – a jump with four revolutions in the air. Asked how he was able to achieve that, Malinin laughed, "The human body