Every four years, we watch. We marvel at badminton, wonder about the modern decathlon and proudly pause for synchronized swimming. With more than 300 gold medals awarded across 37 disciplines, the next two weeks of our lives should be impressively unproductive. To aid in your immersion, we continue with our new series: "know your Olympic sport." It's part reminder that people actually get medals for this stuff (see: trampoline gymnastics) and part introduction to the science behind the sports.