Time in "The Zone"

I spend much of my time being creative in some form or fashion, either work related or otherwise. I've noticed that I tend to do my best work when I work intensively for about 30 minutes and then take a 5 to 10 minute break. It feels sort of like flushing the stress tubes, as when I concentrate I tend to tighten my neck and shoulders and upper body. These little breaks help me relax a bit before heading back to work.

Finding my natural working rhythm has been a nice side-effect of being self-employed. Were I to return to "real" employment, I know I'd find the two-hour-then-break of my past jobs difficult to adapt to. I think I'd end up phoning-it-in more than I should because of the disparities between my natural rhythm and the work-place rhythm.