In his major investigation into the nature of humans, Peter Sloterdijk presents a critique of myth - the myth of the return of religion. For it is not religion that is returning; rather, there is something else quite profound that is taking on increasing significance in the present: the human as a practising, training being, one that creates itself through exercises and thereby transcends itself. Rainer Maria Rilke formulated the drive towards such self-training in the early twentieth century in the imperative 'You must change your life'.In making his case for the expansion of the practice zone for individuals and for society as a whole, Sloterdijk develops a fundamental and fundamentally new anthropology. The core of his science of the human being is an insight into the self-formation of all things human. The activity of both individuals and collectives constantly comes back to affect them: work affects the worker, communication the communicator, feelings the feeler.It is those humans who engage expressly in practice that embody this mode of existence most clearly: farmers, workers, warriors, writers, yogis, rhetoricians, musicians or models. By examining their training plans and peak performances, this book offers a panorama of exercises that are necessary to be, and remain, a human being.