Perhaps, he did that subconsciously, or?
BTW, I know many software developers who use the Pomodoro technique and cannot be productive without it anymore.
No. He knows Pomodoro. I just didn't know at the time that that was what he was doing. I thought he needed frequent breaks because he smokes. I guess he does but maybe that helps him be more productive. Maybe people that smoke are more productive than people that don't, since they often take small breaks.
I personally feel that frequent breaks make me very unproductive
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