BEIJING—Over the course of two years, gymnast Fabian Hambuchen has sculpted his body into peak physical condition, reportedly training three times per day, running up to 70 miles per week, and going to the gym as early as 6 a.m. in order to hang from a horizontal bar for various 30-second intervals over the next two weeks. "This is the best I've ever been," said Hambuchen, whose superior cardiovascular system and 2.2 percent body fat are sufficient to allow him to climb Mount Everest, but who will instead hang from, swing from, and jump down from a nine-foot-high bar. "I've trained my whole life for this moment." Hambuchen is currently ranked 14th in the world at hanging from a bar.