I could never do this. I'm a one-sitting type of guy. I know, sometimes the task might be too arduous to complete in one sitting, but I try to take the most infrequent amount of breaks as possible. I don't like breaks anyway; knowing that while I'm relaxing, there is still work to be done and the clock is ticking.
Admittedly, I'm a college student and I've had to take medicine just to sleep because I always know there is something else that needs to be done. Unfortunately, in my earlier years it would just be melatonin or some other over the counter sleeping assistant; now, it seems to have become wholly alcohol. I tend to only sleep, at most six hours on a good night.
When one has a task, he needs to focus himself appropriately without these distractions and breaks. I understand the argument from an ADD/ADHD perspective (even though I think there are those who use these disorders as a crutch), but even still the task needs to be completed promptly.
When writing an essay, for example, and you take 10 minutes writing and a five minute break, it isn't just a five minute break. It is a five minute break, 1 minute recollecting your train of thought, and 9 minutes writing.
No, I think the best course of action is to sit down, bite the belt, and just do it.