For Fitness Guide (2011), featured in the Triennial, Geumhyung Jeong modified a series of exercise machines, readjusting key parts and activating them in a durational performance. The performance begins with Jeong using the machines in routine ways; gradually her movements morph into erotic, obsessive, and antagonistic actions. By feeding her own energy back into a cyclical machine, the artist posits the female body as the locus of reproductive responsibility within a gendered, exploitative economy.