It depends what I'm writing, but usually consists of reading in that niche. For example, if I'm writing for my marketing blog, I only have to read anything by Dan Kennedy for a few minutes for a flood of ideas to come to my mind to start writing. Plus I always travel everywhere with my notebook even if it's to go out socializing. I'm often mocked by friends for always having a pen and paper in my top pocket for a night out. But it takes me an hour on public transport to get into town. Therefore this is an ideal time to write notes for my next book or blog post.