"Gneiting, 44, is a 6-foot, 430-pound mountain [and] a five-time U.S. champion sumo wrestler... He is a husband and father of five, works full time as a statistician at an Arizona hospital and graduated cum laude with a master’s degree in geology from the University of Idaho. He has run three marathons, setting a Guinness World Record for the heaviest man (400 pounds) to complete one in Los Angeles in 2011. (He weighed 396.2 pounds after the 9-hour, 49-minute feat). He recently trained two years and swam a big-man record 14 miles in Bear Lake in Idaho, paddling the width of the lake twice in 16 hours, 13 minutes. .. He spent five years as a long-haul trucker, turning reststop showers into his practice gym for 90-minute workouts along his route. He turned his Idaho garage into a circular ring (dohyo). That’s where the oldest of his five children, Sarena, became curious about her father’s workouts. “I knew he worked very hard and was good at it,” said Sarena, 16... Gneiting says he has reservations about teaching the traditionally male sport to a woman “since it has always been symbolic for men to fight while our wives, sisters and mothers stayed off the battlefield.” ... Sarena, who is 5 feet 5 and a strong 230 pounds, took third behind wrestlers from Japan and Russia at the Junior World Sumo Championships. Gneiting, the national coach of the U.S. Sumo Federation team, cheered from the sidelines. "