The Canadian artist Miles Greenberg says flesh is his medium. He’s no stranger to pushing his body to the extreme for his art. Some of the things Miles has done include standing on a plinth dripping in fake blood, embracing a stranger while naked and blind, and walking on a conveyor belt all day. For his latest work, “Respawn,” he wrestles and stabs versions of himself in front of a live audience for nine hours straight — and if you’re asking why, Miles has a very good answer. He sits down with Tom to shed light on the piece and his journey in art.