We love our stories of human endurance, from Shackleton’s famed expedition to the 11-hour Wimbledon match to days-long ultramarathons. Hell, even the Coney Island Hot Dog eating contest is broadcast on television; that’s just how much we celebrate a person pushing themselves to the brink. But the moments that inspire the most are the ones in which a solo athlete has spent everything physically and mentally, and is forced to find a new gear emotionally. And for Ironman World Champion Chelsea Sodaro, her moment had nothing to do with swimming-biking-running 140 miles. At the same time Chelsea was standing atop triathlon podiums, she was ravaged by postpartum depression, including near-constant anxiety about mass shootings. What is so stirring about Chelsea is not her ability to push herself past the edge of what’s physically possible, but her emotional abilities to handle what happened when that edge pushed back.