Cameron Lawrence clings onto a wall by the tips of his fingers, nearly upside down. He crouches down and prepares to use his legs to explode upwards to grab a finger hold about a metre above his head.
With a grunt, he leaps into the air and slaps the handhold above him, but he is not quite able to grab onto it, and he crashes down on the padded floor. Standing up, he covers his hands in a helping of chalk to dry up the sweat on his fingers and tries again. Then, hits the ground again. And over and over again, more than a dozen times.