This is it! Well based on what I have learned across books and podcasts, namely Dr. Andy Galpin's discussion with Andrew Huberman, Ultra Processed People and Racing Weight. The shutdown of these systems is believed to give them a break and is one of the reasons that regular exercisers have better health (just think why is exercise even healthy? It wouldn't seem so. Spike cortisol, burn a ton of energy, stress joints, jostle around the organs. Seems bad to me but of course its not).
Or you can find out for yourself. Touch your stomach during a run on a hot day. Its cold. Digestion is slowed and blood pulled away from the gut.
N of 1. But I do not eat much more on the days I run 15 miles on the trail vs days off. I do not need to due to these adaptations.
Permutation City is so good! I haven't ran into it in the wild before but excited to check out his notes. It's a favorite and highly recommend.
I like Goodreads for tracking everything I read and collecting all my reviews, which are just unedited thoughts that I can return to later and very rarely helpful to others. It's also fun to see what friends are reading. Just yesterday I was able to pull up my last two years of books to quickly give a friend a few recommendations based on their interest.
I find listening to books far easier but they have to be non-fiction (or a reread of fiction) and not too complicated. Cobalt Red, Outlaw Oceans and There Are No Accidents were all great listens from this past year. But it's the only way I get through the 2hr minimum of exercise my dog needs a day.
