Knitting is detrimental to work progress

I've learnt to knit! The only problem, as you can probably guess from the title, is that I have work (essay and revision, mainly) that needs to be done, over the knitting. I'm trying to keep myself away from the knitting until after my exams (my last exam is on the same day as my essay deadline), and then I'm hoping to get far in the many hours I'm spending on Virgin Trains, travelling between Manchester, Birmingham and London. Fun. :)