I've got a bit of a cold at the moment, and I'm not sure whether I should train tomorrow. I'm not deathly sick, just feel a bit spacey and have a sore throat/head, etc.

Any thoughts on this? I think I might be okay to train in the short term, but my girlfriend thinks it might slow down my recovery and keep me from doing other things for a bit (I have some serious essays to write, too, which I need a clear head for). Anyway, what do you guys think?