In 2004, Dan Buettner and National Geographic identified five Blue Zones on our planet where people live to be 100 at rates ten times greater than Americans. Okinawa, Japan is one of these Blue Zones and Okinawans are the longest-lived people in the world, with an average life expectancy of over 80 years. The people of Okinawa have many things working in their favor, starting with living in a tropical paradise.