Seasoned investigative journalist Josiah Hesse takes readers on a journey through the secret world of stoned athletes, describing astounding, cannabis-inspired physical and mental transformations. From the economics of the £20 billion CBD market to the inherent inequalities in the enforcement of marijuana prohibition; from the mind-body connection behind the 'runner's high' to the best way to make your own cannabis-infused power bars; Runner's High takes this groundbreaking science out of the lab and onto the trail, court, field, and pitch, changing the way we think about exercise.