I worked in television; I'm the Failed Pilot Queen, I've done so many television shows, pilots, theater ... when you do it for so long, I'm telling you, you get to the point where it becomes varied because you take what's available for a number of reasons. It's just an occupational hazard.
With the case of running, it really is a case of get out, set yourself a distance, run it, and then do it again the next day. It's tremendously simple.