We are not designed to release endorphin all the time. Exercise can give you a little, but exercising to the point of pain doesn’t promote survival. Laughing and crying trigger internal convulsions that stimulate endorphin, but this road to euphoria is limited too. Fake laughs don’t trigger the internal convulsions, and real laughs only last for seconds. Real cries are painful, and fake cries don’t trigger the physical distress.
