It's hard to say--I definitely expected there to be more of an after-effect, so it was a little disappointing to realize that that wasn't going to happen. I think a lot of it has to do with the setting in which I live and work--big cities simply have a lot of stressors in them: noise, crowds, cars, etc., that are all triggers for me. At the time I was also managing a group of co-workers, and the responsibilities that came with it also were stressful.
I think I would have been able to persist the state longer if I lived in a suburb where I could avoid those things more readily.