During what psychologists call “flow states,” where one is completely immersed and absorbed in a mental or physical act, people often report an altered sense of time, place, and self. It’s a transportive and pleasurable experience that people seek to achieve, and that neuroscience is now seeking to understand. A great example of flow state is found in many improvised art forms, from music to acting to comedy to poetry, also known as “spontaneous creativity.” Improvisation is a highly complex form of creative behavior that justly inspires our awe and admiration. The ability to improvise requires cognitive flexibility, divergent thinking and discipline-specific skills, and it improves with training.