Gnar Country: Growing Old, Staying Rad

The 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 network neuroscience have revolutionized ...