A longevity researcher changed his routine after visiting an island 'Blue Zone' where people live to 100

Source: Business Insider

Residents of Sardinia, Italy get plenty of longevity-boosting exercise from walking the region's hilly terrain. imantsu/Getty ImagesSome of the longest-living people on earth get their exercise with daily walks, not the gym. A longevity researcher reconsidered his routine after visiting centenarians in Italy's Blue Zone.