Прямое действие
While training for "Action Directe", Güllich invented the modern training technique of campus boarding to prepare his fingers for the grueling overhung crimps. He hung the first campus board at a Nürnberg gym named "Campus" in 1988, and made the first ascent three years later. He worked with his friend and fellow climber Jerry Moffatt who found that the power training greatly improved a climber's endurance.