2. Water
Everyone should know that water is good for you. Obviously, the body needs it, and it can only go about three days without it. But it’s also a lot healthier than most drinks you can buy in stores because it doesn’t have any sugar, chemicals, or added ingredients.
Buettner thinks that the water in Blue Zones may also be better for your health than water in other places. “If you ask a centenarian what explains the longevity of the area, they’ll say good food, clean air, and fresh water,” he says. “And it may indeed be that the water in the Blue Zones is cleaner.” (Access to clean water is a serious health issue in many parts of the world, of course.)