Okinawa, where there are 24.55 people over the age of 100 for every 100,000 inhabitants—far more than the global average. Those who study why the inhabitants of this island in the south of Japan live longer than people anywhere else in the world believe that one of the keys—in addition to a healthful diet, a simple life in the outdoors, green tea, and the subtropical climate (its average temperature is like that of Hawaii)—is the ikigai that shapes their lives.
