Abstract Recently, there has been rising interest in the use of cannabis and its derivatives as therapeutic tools to support brain health, particularly in athletes. Cannabis-based substances interact with the endogenous cannabinoid (i.e., endocannabinoid) system, which is involved in widespread physiological processes that contribute to brain function. In other work, the benefits of exercise for brain health have been prominently noted. Despite large bodies of work on both cannabinoid and exercise influences on brain function, there is an understudied overlap in their physiological effects that may be especially important in athletic populations regularly engaged in high volumes of exercise. This narrative review describes mechanistic...