As an unseasonably warm winter fades into an even warmer spring, people are already wondering what the summer has in store temperature wise. Whatever level the mercury rises to, however, there’s no doubt we will all hear the warning: “Stay Hydrated.” So just how do you follow the advice? While it’s tempting to drink iced tea or an ice cold soda when it’s hot, the reality is that it’s not good for you. There are too many calories and too much sugar, not to mention the cost. Water is best, and cheapest. But that, of course, begs the question; how much water should you drink?