As the yeast population (# cells) double and triple in the wort, they are also increasing the competition for nutrients. Even if they didn't reproduce, as nutrients become limiting over the course of normal fermentation, there is increased competition for them. By their logic, you'll cause stress and possible off flavors regardless.
I do agree with how quickly yeast take up oxygen.Statistics: Posted by Owenbräu — Wed Jul 20, 2016 9:24 am
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