Hydrate or die, warned Camelbak, the American water-pouch-in-a-backpack company, some years after it was founded in 1989. Water is necessary for survival, but how do we know when we’re getting enough, ...

Find Out How Much Water You Need to Drink per Day Factors That Affect Fluid Needs The Importance of Staying Hydrated One Last Thing: Don’t Flood Your System All at Once To give yourself a better sense ...

We all know the tip: "Drink 8 cups of water a day." But how did they pick that number? Is it the best rule to stay well, or just an easy tip that people have said over and over for years? The real ...