The Harvard Healthy Eating Pyramid represents the latest nutritional science. The widest part at the bottom is for things that are most important. The foods at the narrow top are those that should be eaten sparingly, if at all. This Healthy Eating Pyramid shows daily exercise and weight control in the widest, most important category. Fats from healthy sources, such as plants, are in the wider part of the pyramid. Refined carbohydrates, such as white bread and white rice, are in the narrow top. Red meat should also be eaten sparingly, while fish, poultry, and eggs are healthier choices.