Week 7: Did you know that the foods you choose can potentially influence your behavior and emotional well-being? After eating, the brain releases chemicals known as serotonin, dopamine and norepinephrine. Serotonin is a calming and relaxing chemical, whereas dopamine and norepinephrine are responsible for alertness, excitement, action, and mental acuity. Each macronutrient - carbohydrates, fats, and proteins - aids in the release of these chemicals. It is very important to eat from all major groups to keep your body running smoothly, so be sure to include all 3 macronutrients in each meal and snack.