I know that I need to get most of my studies done first, so I always give that the priority. I really don't like it when I have to change a routine, especially my work out routine, but then again, I force myself to do stuff like that.
During weekends, I get more free-time, but working days just drain me, by the time night arrives. So I'd say I don't have much time, unless I don't have any projects or assignments from college. And I also used to play, but existential anxiety and thoughts about the future, usually take up my time quickly - and I just seem to think for so much time, that time just seems to run past!
I do have my comfort zone as well, and yes, I prefer to do things within it. I don't take much risks, and I do feel slightly guilty after losing a good opportunity. But it all vanishes after a good session of thinking - taking some time to think about a particular incident, and thinking of how one will deal with such a situation, can ease the anxiety. So I usually spent a lot of time without intending, to spend it just for thinking...