In Degeneration And Revolution: Radical Cultural Politics and the Body in Weimar Germany Robert Heynen explores the impact of conceptions of degeneration - exemplified by eugenics and social hygiene - on the social, cultural and political history of the left in Germany, 1914-33. Demonstrably, hygienic practices of bodily regulation were integral to the extension of modern capitalist social relations, and profoundly shaped Weimar culture.