Bestselling author Dan Buettner reveals how to transform your health using smart nutrition, lifestyle, and fitness habits gleaned from longevity research on the diets, eating habits, and lifestyle practices of the communities he's identified as "Blue Zones"—those places with the world's longest-lived, and thus healthiest, people, including locations such as Okinawa, Japan; Sardinia, Italy; Costa Rica's Nicoya Peninsula; Ikaria, Greece; and Loma