I’m not going to convince anyone by pulling a couple references from PubMed. I only suggest you do your own research on extreme sports - and yes, ruining 26 miles nonstop counts as extreme - and come to your own conclusions. If you’re marathoner, I also invite you to investigate the importance of muscle mass in overall health, particularly as one ages. Muscle has a host oh health benefits, even though an extra 20 lbs of upper body muscle mass will kill your long distance running times.
> I’m not going to convince anyone by pulling a couple references from PubMed
You could at least make a good faith attempt and meet people at least halfway though, right?
FWIW I've read studies saying the same thing- my critique is just with your approach here. You wouldn't believe someone who just waltzed in with a statement and refused to post any references, would you?