Buettner’s colossal research effort, funded in part by the National Institute on Aging, has taken him from Costa Rica to Italy to Japan and beyond. In the societies he visits, it’s no coincidence that the way people interact with each other, shed stress, nourish their bodies, and view their world yields more good years of life. You’ll meet a 94-year-old farmer and self-confessed "ladies man" in Costa Rica, an 102-year-old grandmother in Okinawa, a 102-year-old Sardinian who hikes at least six miles a day, and others. By observing their lifestyles, Buettner’s teams have identified critical everyday choices that correspond with the cutting edge of longevity research—and distilled them into a few simple but powerful habits that anyone can embrace.