Don't be fooled by her childlike grin and bubbly down-to-earth personality. Aya is serious about her mission to rewrite the rules of fitness and front a campaign to get Japan into shape.Though she appears very much the girl next door in her cropped sweatshirt and sneakers, out of sight are rock-hard, six-pack abs that show she practices the workout and diet regime she preaches."I'm allowed today. It's my cheat day," she says as she devours two cakes during a recent interview with Kyodo News.Unapologetic about her sweet tooth, Aya continues to appeal to Japanese women because she has succeed…READ FULL ARTICLE