Replace refined grains with whole ones to capture beneficial nutrients in the bran and germ. Start your day with steel-cut oats, add quinoa or freekeh (roasted, rubbed green grain, usually wheat) to salads and try wild or black rice with dinner. The extra fiber might also slim you down: people who eat 3 or more whole-grain servings daily have lower body mass indexes and less belly fat than those eating fewer servings, says a study in the Journal of Nutrition.