“What it does is mimics what you do in a work production standpoint, only in a competition environment,” says Lindsey Purcell, who teaches forestry at Purdue and serves as president of the Indiana Arborists Association. “I mean, I call them tree athletes. Instead of ‘triathletes’ I call them ‘tree athletes,’ because you not only have to understand the physiology and biology of the tree, but you also have to be athletic to get to work.”