My FS basicaly said to limit caffiene, abstain from alcohol and no foods associated with listeria only when I was doing a cycle, mainly in case we got lucky and had success. But in between, it's life as normal, eg choccies, coke and most definitely lots of vino! Lol! God how would you survive the rollercoaster if you couldn't relax and return to 'normal' life between cycles? The thing I didn't do between cycles is smoke (I gave up up before starting IVF), but otherwise, a break cycle was most definitely a break cycle, and you need to be able to let go and unwind. As long as you're doing everything in moderation, why not?