"The Japanese diet is the iPod of food," says Naomi Moriyama, co-author of Japanese Women Don't Get Old or Fat: Secrets of My Mother's Tokyo Kitchen, "it concentrates the magnificent energy of food into a compact and pleasurable size." And you don't have to cook Japanese-style to enjoy the diet's healthy foundations -- just eat more fish, vegetables, and fruit; serve smaller portions; eat mindfully and slowly; and add some healthy options like tofu and rice, she says. Here's how to get started.