The Paleo Manifesto by John Durant, who argues that humans should adopt a "Paleolithic" lifestyle, modeled on the diet and behavior of our hunter-gatherer ancestors. Durant provides anecdotal and scientific evidence to support the claim that a Paleo diet and lifestyle can lead to better health outcomes than modern practices. He also explores the evolution of the human body, contrasting the health of early hunter-gatherers with that of later farmers and modern city dwellers. Durant goes on to explain how this "Paleolithic" approach to living can be applied to exercise, sleep, and even spiritual practices.