The bad news: On any given outdoor expedition, you are your own worst enemy. The good news: If you are prepared, which this book helps you achieve, you might just live through it. As MeatEater host and experienced outdoorsman Rinella notes, there are countless dangers attendant in going into mountains, woods, or deserts; he quotes journalist Wes Siler: "People have always managed to find stupid ways to die." Avoiding stupid mistakes is the overarching point of Rinella's latest book, full of provocative and helpful advice. One stupid way to die is not to have the proper equipment. There's a complication built into the question, given that when humping gear into the outdoors, weight is always an issue. The author's answer? "Build your gear list by prioritizing safety." That entails having some means of communication, water, food, and shelter foremost and then adding on "extra shit." As to that, he notes gravely, "a National Park Service geologist recently estimated that as much as 215,000 pounds of feces has been tossed haphazardly into crevasses along the climbing route on Denali National Park's Kahiltna Glacier, where climbers melt snow for drinking water." Ingesting fecal matter is a quick route to sickness, and Rinella adds, there are plenty of outdoorspeople who have no idea of how to keep their bodily wastes from ruining the scenery or poisoning the water supply. Throughout, the author provides precise information about wilderness first aid, ranging from irrigating wounds to applying arterial pressure to keeping someone experiencing a heart attack (a common event outdoors, given that so many people overexert without previous conditioning) alive. Some takeaways: Keep your crotch dry, don't pitch a tent under a dead tree limb, walk side-hill across mountains, and "do not enter a marsh or swamp in flip-flops, and think twice before entering in strap-on sandals such as Tevas or Chacos." A welcome reference, entertaining and information-packed, for any outdoors-inclined reader. Copyright (c) Kirkus Reviews, used with permission.