Another factor that comes into play is having regular periods of intense focus. We all claim to be focusing when we're doing work, but there are still all those microdistractions that come with the territory. You'll learn very quickly how to maintain focus if you down want to drop a couple hundred pounds on your chest.

There was a period of time when I wasn't working out, but I'd go for a drive late at night when I was stressed. Not a normal drive, mind you; I would blast up and down the side of a nearby mountain. The physical aspect of driving, combined with the focus necessary to not go flying off a cliff, had a very similar effect. I don't recommend this, as it was extremely reckless, but if you happen to live anywhere near a track, or even a karting facility, I'd strongly suggest trying it out.