Peter Attia, a Canadian-American doctor, is fascinated, in a very geeky but also practical way, in longevity, and has created a kind-of medical practice around the concept. But as “Outlive: The Science and Art of Longevity” confidently avers, Attia is just as concerned about how physically and mentally viable and fruitful the final decades of life—what he calls “healthfulness”—can be, as about how long we live. In general we humans are living longer but as mere shadows of functioning people from as early as our 60s. This is familiar terrain for me, obsessed as I am about existential issues, and a recent health scare has seen me radically transform my diet and sharpen my focus on other aspects of health. Outlive surveys the latest science (and the art, as Attia puts it) of extending and improving longevity. The author is a captivating stylist, freshly honest, with just the right mix of geekiness, advice, and credibility (he acknowledges kudos to almost-coauthor Bill Gifford). Commencing with the most potent weapon in our armory, exercise—not just aerobic, but also strength and stability)—he covers nutrition, sleep, and emotional health, all cogently, steadily, and with a practical bent tailored to individuals. Having read many such books, I can say that Outlive is one of the best (even though I disagree with his nutritional advice) and can be recommended to anyone exploring how to live a better life.