Take Thanksgiving dinner, for example: At the average American home, a lot of the foods weighing down the table are arguably quite bad for you. Turkey is pretty good—it's high in lean protein—and frankly, the fats in gravy aren't as bad for you as the low-fat diet craze would have you think. But potatoes are, unfortunately, boiled and mashed little insulin bombs. The good news is that on your new "diet," you can still have some. Relish the starchy goodness—just relish it in a reasonable quantity. The same goes for pie, and that sweet-potato casserole that's just an excuse to eat mini marshmallows.