In her portrayal of the sport’s star athletes, its passionate coaches and its chief armorer, Rogue Fitness, Herz powerfully evokes the uniqueness of a fitness culture that cultivates primal fierceness in averagepeople.And in the shared ordeal of an all-consuming workout, she unearths the ritual intensity that’s been with us since humans invented sports, showing us how, on a deep level, we’re all tribal hunters and first responders, waiting for the signal to go all-out.”