Gnar CountryThe New York Times bestselling author and human performance expert tests his knowledge and theories on his own aging body in a quest to become an expert skier at age fifty three. Gnar: adjective, short for gnarly, def: any environment or situation that is high in perceived risk and high in actual risk. Country: noun, def: any defined territory, landscape, or terrain, fictitious or real. Cutting edge discoveries in embodied cognition, flow science, and