Is there some (or any) scientific basis for this? I couldn't find any justification or references in the article, although my apologies in advance if I missed them.
> This kind of pattern is natural; research confirms that people tend to take longer breaks after working for longer. (One-third is just a recommendation; you can use other break fractions if you prefer.)
There is a link on the word research. That seems like a justification to me. I prefer just to casually take it into account though.
