Flow is the state of complete absorption in an activity in which time perception alters, self-consciousness vanishes, and performance reaches its peak. The concept was named and systematically described by the psychologist Mihaly Csikszentmihalyi, first in Beyond Boredom and Anxiety (1975) and then in his widely read Flow: The Psychology of Optimal Experience (1990). Csikszentmihalyi identified the conditions that precede flow — a balance between challenge and skill, clear goals, immediate feedback — and documented its occurrence across domains from chess to surgery to rock climbing. But the neuroscience of flow remains incomplete. Arne Dietrich proposed in 2004 that flow arises from transient hypofrontality: a temporary down-regulation of the prefrontal cortex that silences the inner critic and the sense of self. More recent work by Ying Hwa Kee and John Wang has linked flow to default mode network suppression. Steven Kotler's Flow Research Collective has proposed a neurochemical cascade involving dopamine, norepinephrine, endorphins, anandamide, and serotonin. Yet no complete neural model exists. The conditions Csikszentmihalyi identified are necessary but not sufficient — flow cannot be reliably induced, and its mechanisms remain debated. The Academy hosts Flow in the Body School because the state is known most immediately through the body: in the climber's fingers, the musician's hands, the runner's stride. Every game that has ever absorbed a player completely is an instance of the phenomenon neuroscience cannot yet explain.