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How is it that Americans are more obsessed with exercise than ever, and yet also unhealthier? Fit Nation explains how we got here and imagines how we might create a more inclusive, stronger future.

If a shared American creed still exists, it’s a belief that exercise is integral to a life well lived. A century ago, working out was the activity of a strange subculture, but today, it’s almost impossible to avoid exhortations to exercise: Walk 5K to cure cancer! Awaken your inner sex kitten at pole-dancing class! Sweat like (or even with) a celebrity in spin class! Exercise is everywhere.

Yet the United States is hardly a “fit nation.” Only 20 percent of Americans work out consistently, over half of gym members don’t even use the facilities they pay for, and fewer than 30 percent of high school students get an hour of exercise a day. So how did fitness become both inescapable and inaccessible?

Spanning more than a century of American history, Fit Nation answers these questions and more through original interviews, archival research, and a rich cultural narrative. As a leading political and intellectual historian and a certified fitness instructor, Natalia Mehlman Petrzela is uniquely qualified to confront the complex and far-reaching implications of how our contemporary exercise culture took shape. She explores the work of working out not just as consumers have experienced it, but as it was created by performers, physical educators, trainers, instructors, and many others.

For Petrzela, fitness is a social justice issue. She argues that the fight for a more equitable exercise culture will be won only by revolutionizing fitness culture at its core, making it truly inclusive for all bodies in a way it has never been. Examining venues from the stage of the World’s Fair and Muscle Beach to fat farms, feminist health clinics, radical and evangelical college campuses, yoga retreats, gleaming health clubs, school gymnasiums, and many more, Fit Nation is a revealing history that shows fitness to be not just a matter of physical health but of what it means to be an American.

2026 Honorable Mention in Monographs, North American Society for Sport History (NASSH)

The incredible career of the forgotten but foundational pro wrestler who shaped American sports culture. 

William Muldoon was an infamous athlete whose prowess, savvy, and chicanery across his six-decade career led him to wealth, cultural importance, and political power. Muldoon, the child of poor Irish immigrants, began wrestling in the 1870s and quickly became one of the most famous athletes of the post–Civil War era. He started acting and modeling as his popularity grew, making him one of the first sports stars to achieve crossover success. After a triumphant stint rehabilitating fallen boxing heavyweight champion John L. Sullivan in 1889, he retired from the ring and began a new career as a fitness impresario, founding an elite gymnasium and remaking himself as a health authority in the press. He became trainer to the rich, famous, and politically powerful, which led to his appointment as chair of the New York State Athletic Commission in the 1920s. From this position, Muldoon exerted his influence over the rules of boxing and wrestling and weaponized his power to maintain segregation in sport.

The Last Gladiator is a deep, insightful dive into Muldoon’s life and impact, demonstrating the significance of this often-controversial figure in the development of American sports, professional wrestling, and physical and popular culture.