Last time round, I wanted peanut butter. As I hated the stuff before that it came as a huge shock to everyone who knew me. I had a real coffee habit, so many of us lost that along with tea, which is a good thing. The first time round I wanted to drink orange juice all day long.
I remember a friend was addicted to full coke. She drank litres of the stuff every day. She was told repeatedly not to drink it, and then she lost the baby. Several older women would no longer speak to her, but I understood the craving that they had obviously forgotten. She never really showed, and now I know (which I didn't then) that too much caffeine reduces the size of your baby. So our bodies are telling us to lay off.