[baccheion]

Such can be muted with proper nutrition. The brain runs on carbs. Efficient diet keeps blood from being redirected to digestion while still getting energy and nutrition?

Further, acetylcholine and nootropics switch to protein burning (makes more carbs instead of burning fat) when carbs run low. That is, the brain has better and more consistent fuel.

Steady blood sugar, stable digestion, easy digestion, and acetylcholine/protein- based backup fueling, and proper nutrition makes it easier to work through marathons. Same with creating a good work environment.

Many aren't even nutrient sufficient. That is, they have deficiencies and aren't meeting all RDAs. See: CRON-o-meter. Common ones are vitamin D3 (+ K2) and magnesium, net alkaline PRAL score, and more calcium than phosphorus.