How long do you work til? Going to the gym for me would entail: getting ready, driving there, working out for an hour, driving home, showering and then getting back to work. Seems nice in theory but it'd be way too disruptive for me.
I'm currently living in Toronto, Canada (I'm from Australia). I don't really know anybody here so I have nothing better to do than work. I take time off for the gym, food and when my girlfriend has time off work. This way she stays happy and I get to work as much as I want.