Study = Eat too much

Andrea and I have been studying together on this miserable, cold and rainy day. I am noticing that study = eat what ever food you want to eat. We have had 1 coffee, mixed lollies, Carbonara ravioli, blackforest chocolate and now a cup of tea. Seriously why does studying mean eat what ever you want? Is it because I am studying I think this isn't going to make me fat? Cut bad habits now before its too late....