Average life expectancy: 78.4 years
Costa Rica (Try these adventures there) was the happiest nation a few years ago. The 2016 Happiness Index has ranked the tiny nation 14th of a total of 157 countries. The people in the fifth Blue Zone follow simple living philosophies: Drink a lot of water (know when you're dehydrated), put family first, eat small dinners, keep a friendly social life, and get enough sunshine and its benefits. Residents feel like they have a purpose because of strong community ties, which can actually help you live longer, according to a study published in Psychological Science.