Originally Posted by Peterock
Absurd?? Come on. how?
I'm not trying to make waves here.
Yeast don't work with ever fiber in their being to get to our final gravities. It is not like they push through extreme fatigue just to chew through those few points, then die of exhaustion upon reaching final gravity. If they did, every beer would be insanely phenolic, estery and full of many other off-flavors. It would be the furthest extreme from the clean tasting beverages we know today.
As long as you aren't fermenting 15-20+ degrees above (or below) the yeast strain's optimal range, and not pushing ABV over 12%, then there is no reason the yeast would be "tired". You pitch them into the beer, they work efficiently consuming all available resources, then when they run out they go dormant. Add more resources for them, they will wake up and consume them, then do back to dormancy. How else would breweries, both commercial and hobby level, be able to reuse yeast for many generations if after one batch they were too exhausted to even eat table sugar?
To suggest that yeast are too stressed (what I assume the intended connotation of "tired" to be) to eat one of the simplest sugars available for brewing but are fine to eat another of the simplest sugars out there is absurd.
I can't argue that they may carb faster (although I doubt you would ever notice a difference). You are supposed to condition the beer in bottles for a period anyway, so it is a moot point.