Psychophysiology is the scientific study of the reciprocal relations between mind and body. It is characterized by interdisciplinary, multimeasure research studies, which shed light on the processes and mechanisms underpinning human behavior. The articles published in the special issue showcase an array of psychophysiological applications for sport and exercise science and highlight the exciting potential of psychophysiological research to shine new light on theory and mechanisms in sport and exercise psychology. They all embody psychological and physiological interdisciplinarity and follow good practice guidelines to increase methodological rigor, such as replicating effects across multiple studies, providing clear statements of statistical power, and combining self-report and multiple levels of physiological measures to yield corroborative modes of inference. Each article also provides specific directions for future avenues to further advance the sport, exercise, and performance field. In its short history as a journal, Sport, Exercise, and Performance Psychology has championed interdisciplinary research that adopts advanced and rigorous methods. This special issue further establishes Sport, Exercise, and Performance Psychology as a primary outlet for sport and exercise psychophysiology research. (PsycINFO Database Record (c) 2019 APA, all rights reserved)