At 46, “Terrible” Terry Norris has the lean, muscled frame of a former pro boxer. He’s just a little taller than average, with a thick, black Van Dyke framing a bright smile. Gray creeps in at the edges of his beard, but his shaved head seems the only concession to age, a paring away of the intricately razored box cut of his heyday, now some 20 years gone. These days, he teaches cardio boxing in a converted garage north of Hollywood; upstairs, he shares a loft with his wife, Tanya, who also teaches and runs his gym. During classes he looks fit and powerful, his fists still preternaturally fast. Only when he speaks, in a low, raspy murmur bordering on unintelligible, do you wonder at the damage he’s suffered.