This article originally appeared in the August 1996 edition of SPIN. With Biography: KISStory airing tonight, we’re republishing the story here. Whoo-hoo, it’s a firehouse inside Gold’s Gym, a Hollywood sweatbox packed with waiters looking to be actors, actors looking to be bodybuilders, and bodybuilders looking at their reflection in the mirrored walls. In one corner, Paul Stanley, singer and rhythm guitarist in Kiss, and at 44 its youngest member, strains against the forces of nature as he hangs from the Gravitron. The man usually seen with a huge star across his face is, this Saturday afternoon, seeing stars. He may be masked for a living, but momentarily, dangling from the Gravitron, Stanley’s face contorts into a mask of pain. “All right, let’s do it!” barks Anton, the offi...