Runner's HighBy: Josiah Hesse Michael Pollan's How to Change Your Mind meets Christopher McDougall's Born to Run in this immersive, investigative look at the hidden culture of cannabis use among elite athletes (as well as weekend warriors) and the surprising emerging science behind the elusive, exhilarating "runner's high" they all seek. Pot makes exercise fun. The link between performance enhancement and cannabis has been an open secret for many years, so much so