Protein plays a crucial role in preserving and building lean body mass, whether in a diet, maintenance, or surplus. However, the satiating effects of food can vary significantly based on its form and preparation. For instance, while a protein bar may be tasty, it often lacks the satiation of whole foods like chicken breast or a baked potato, which can leave you feeling more satisfied. The psychological associations and sensory experiences tied to food also influence our perception of fullness.