It's never too early or too late to work towards being the healthiest you. (Step away from the screen and go for a walk with a co-worker).
Dan Buettner is a National Geographic Fellow and the founder of Blue Zones, an organization that helps Americans live longer, healthier lives. His groundbreaking work on longevity led to his 2005 National Geographic cover story "Secrets of Living Longer" and three national best-sellers, The Blue Zones, Thrive, and The Blue Zones Solution. His forthcoming book, The Blue Zones of Happiness, will be published by National Geographic in October 2017.