Woody Allen once observed in answer to the question, 'Why does man kill?' that, "He kills for food. And not only food, frequently there must be a beverage."
If you like to run, you should take heed of the last part: Be sure to keep yourself hydrated. That means at least 16 ounces of water an hour; more if you perspire a lot. It's important because lack of water can lead to heat stroke and other problems.
So on your mark... get set... start sipping.