What Doesn't Kill Us,  a  New York Times  bestseller, traces our evolutionary journey back to a time when survival depended on how well we adapted to the environment around us.   Our ancestors crossed deserts, mountains, and oceans without even a whisper of what anyone today might consider modern technology. Those feats of endurance now seem impossible in an age where we take comfort for granted. But what if we could regain some of our lost evolutionary strength by simulating the environmental conditions of our forebears?  Investigative journalist and anthropologist Scott Carney takes up the challenge to find out: Can we hack our bodies and use the environment to stimulate our inner biology? Helping him in his search for the answers is Dutch fitness guru Wim Hof, whose ability to control his body temperature in extreme cold has sparked a whirlwind of scientific study. Carney also enlists input from an Army scientist, a world-famous surfer, the founders of an obstacle course race movement, and ordinary people who have documented how they have cured autoimmune diseases, lost weight, and reversed diabetes. In the process, he chronicles his own transformational journey as he pushes his body and mind to the edge of endurance, a quest that culminates in a record-bending, 28-hour climb to the snowy peak of Mt. Kilimanjaro wearing nothing but a pair of running shorts and sneakers. An ambitious blend of investigative reporting and participatory journalism,  What Doesn't Kill Us  explores the true connection between the mind and the body and reveals the science that allows us to push past our perceived limitations.   Climbing a mountain in nothing but a pair of shorts seems idiotic to most, but for Wim Hof and his companions, it’s just another day. When investigative journalist and anthropologist Carney heard about Hof’s mind-boggling methods and claims that he could “hack” the human body, he knew he had to venture to Poland to expose this fraud. But in just a few days, Hof changed Carney’s mind, and so began a friendship and a new adventure. Carney now chronicles his journey to push himself mentally and physically using Wim Hof’s method of cold exposure, breath-holding, and meditation to tap into our primal selves. Our ancestors survived harsh conditions without modern technology, while we live in comfortable bubbles with little to struggle against and wonder how they survived. The question is, What happens when we push our bodies to the limit? Carney calls on evolutionary biology and other modern scientific disciplines to explore and explain Hof’s unconventional methods. Fresh and exciting, this book has wide appeal for readers interested in health, sports, self-improvement, and extreme challenges. ― Booklist As this engaging autoethnography relates, anthropologist and investigative journalist Carney was skeptical upon encountering a photo of a nearly naked Wim Hof sitting on a glacier in the Arctic Circle. Hof, a Dutch fitness guru who runs a training camp in Poland’s wilderness, claims he can control his body temperature and immune system solely with his mind; though Carney set out to prove Hof a charlatan, he was instead won over. Carney documents his interactions with Hof and the many others who have learned to control their bodies in seemingly impossible ways: he learned Hof’s breathing techniques for tricking the body into doing things it isn’t evolutionarily designed for, and underwent training to face extreme cold while barely clothed. It is this training that enables Hof and Carney to summit Mt. Kilimanjaro in 28 hours while wearing shorts. This is part guide and part popular science book; readers will learn about how Neanderthals used the body’s “brown fat” to keep warm and how exposure nearly reverses the symptoms of diabetes. The accomplishments Carney documents are unbelievable and fascinating; this isn’t a how-to for those looking to perform extraordinary feats, but it is an entertaining account that will appeal to the adventurous. ― Publishers Weekly On the heels of the paleo diet comes a new claim: taking on the physical challenges of the environment faced by our prehistoric ancestors can undo what easy calories and effortless comfort have done to our bodies―made them fat, lazy, and weak. In his latest book, investigative journalist and anthropologist Carney (A Death on Diamond Mountain: A True Story of Obsession, Madness, and the Path to Enlightenment, 2015, etc.) expands on his 2014 Playboy piece, “The Iceman Cometh,” in which he profiled Dutch fitness guru Wim Hof and experienced Hof’s strenuous training methods, some of which involve exposing the near-naked body to snow and icy water. At first skeptical, Carney became convinced by the changes he experienced in his own body. The narrative is filled with personal details that will engage, astonish, and even repel readers. Expanding on his unnerving close-up account, the author also examines the research being done on the role of brown adipos