Hormones That Boost Happiness and Fruits That Enhance Their Production Key Happiness Hormones: Serotonin: Role: Regulates mood, sleep, appetite, and digestion. Boost: Sunlight exposure, exercise, and diet rich in tryptophan. Dopamine: Role: Influences pleasure, reward, motivation, and motor control. Boost: Achieving goals, physical activity, and consuming protein-rich foods. Endorphins: Role:...