You can only warn people so many times to bundle up against the cold so many times before you realize that they just have to figure it out themselves. It doesn't make it any less frustrating when they come in complaining about how they think they've caught a cold, though.
At least that's not the most pressing concern? I mean, right now, one of our beaters looks to be about fourteen at the moment. I've been puzzling over this for the last few days, and I've got nothing. The age potion isn't working, and I'm a little afraid to try it again for fear of when it does get reversed that it'll shoot them way past their normal age. And let's face it, I don't think the boss would be too happy with me if one of his players broke a hip, and it wasn't quidditch related.