Comment on Dr. Keith Baar, UC Davis — Simple Exercises That Can Repair Tendons (Tennis Elbow, etc.), Collagen Fact vs. Fiction, Isometrics vs. Eccentrics, JAK Inhibitors, Growth Hormone vs. IGF-1, ...

In reply to Aristotle.

Might I suggest a slight alteration to your interpretation: “If you want to maximize brain function and longevity, then you should do a lot of exercise, including resistance and cardio, and maintain a ketogenic diet. The optimal program for brain function and longevity is both. If you want to maximize exercise performance for athletic competition, then you might not want to be on a ketogenic diet because your maximum performance will likely be slightly diminished, which could matter for athletic competitions. If you are exercising for yourself, your general health and longevity, then you can maintain a ketogenic diet because the slightly diminished performance does not block these goals. If you find, for whatever reason, that you cannot exercise, then you should at least be on a ketogenic diet. If you find, for whatever reason, that you cannot maintain a ketogenic diet, then you should at least be exercising a lot."

If this were hierarchical, exercise would beat a ketogenic diet, but this is not hierarchical. Both are beneficial and they are beneficial together. If you are competing and your one-rep-max matters, you might be able to squeeze a little more performance out of glucose than ketones. Ketones work fine if you're not competing or you're only competing with your personal bests.