“Why do you almost always drink water when we go to the pub?” Gwen asked, puzzled.
Jack shrugged. “It’s important to stay hydrated,” he explained. “Especially in our business, with all the running around. Alcohol dehydrates. You should drink more water, Gwen Cooper!”
“That’s not the whole story though, is it,” Ianto commented later, when it was just the two of them.
“No. Where I grew up, it was very dry, almost a desert; we had the ocean on our doorstep, but fresh water was scarce and essential to our survival. I still marvel at how plentiful it is here.”