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Water: What we need, why we need it and how to get it
Water: What we need, why we need it and how to get it

For two decades, we've been encouraged — some might say hounded — into making drinking water a habit. We carry it in plastic bottles, reusable canisters, on our backs to suck through elaborate tubing. We might even hire a doctor to have it injected into our veins. Have we gone mad? Clean, clear water: It's the most essential of essentials. Humans need it to survive. Our bodies are 60% water; the brain and heart, 73%, the lungs, 83%. "You need to be hydrated, and our bodies function best when [they are] in water balance," said Boston sports nutritionist Nancy Clark, who works with the Red Sox, among others. Your body requires water to: digest food;...

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