Cutting-edge scientific discoveries have revolutionized how we think about peak-performance aging. On paper, these discoveries should allow older athletes to progress in supposedly “impossible” activities. After all, a world-class athlete such as Kelly Slater, the greatest surfer of all time, is winning competitions in his fifties;Tom Brady beat players half his age. But what about the rest of us? To see if an old dog really can learn new ticks, Steven Kotler—who has been studying human performance for thirty years—conducted his own ass-on-the-line experiment. Gnar Country is the chronicle of pushing his own aging body past its supposed limits. It’s a book about goals and grit and progression. It’s an inspiring, practical, and often hilarious antidote for weariness. Kotler challenges us to test ourselves, surpass our limits, and achieve our own impossible, whether we’re hurtling down a mountainside, running our first 10K race, or taking our career to new heights. Part personal journey,