This video has been updated in a later version to reflect the controversy surrounding the quads in Nathan Chen’s 2018 Pyeongchang Olympic routine. The newer video is linked in the credits, or can be found here: https://www.youtube.com/watch?v=RtFGwpMlOYo 17-year-old Nathan Chen is on the verge of becoming the world figure skating champion. We break down the gravity-defying physics behind his record-breaking moves. Read more about the science behind Nathan Chen's routine: https://goo.gl/fsthmn Nathan Chen is on the verge of becoming the best figure skater alive. But the stresses on the 17-year-old American aren't just psychological. Chen is known for doing more quadruple jumps in a single program than any other figure skater in the world. But the moves are incredibly taxing on the human body. These are the physics behind figure skating's most difficult jump. SUBSCRIBE: https://goo.gl/kdDpXu FOLLOW QUARTZ: Facebook: https://goo.gl/DsmLvx Twitter: https://goo.gl/rY7pSX Check out the rest of our videos: https://goo.gl/A8gZvx Quartz is a digitally native news outlet dedicated to telling stories at the intersection of the important and the interesting. Visit us at https://qz.com/ to read more.