A New York Times bestseller & a Book of the Year for the Evening Standard & The Times Is getting a little less comfortable the key to living a happier healthier life? When journalist Scott Carney came across a picture of a man in his fifties sitting on a glacier in just his underwear he assumed it must be a hoax Dutch guru Wim Hof claimed he could control his body temperature using his mind & teach others to do the same Sceptical Carney signed up to Hofs one-week course not realising that it would be the start of a four-year journey to unlock his own evolutionary potential From hyperventilating in a Polish farmhouse to underwater weight training in California & eventually climbing Mt Kilimanjaro wearing just shorts & running shoes Carney travelled the world testing out unorthodox methods of body transformation & discovering the science behind them In What Doesnt Kill Us he explains how getting a little less comfortable can help us to unlock our lost evolutionary strength