I have already said this in a different thread, I’m not a big fan of fasted or low glycogen training. However, as it seems there are other ways to increase fat ox when riding after breakfast.
Early this year I saw this study, noted it but did not really grasp its relevance (for me). Untrained subjects, 12h fasted before trials.
However, I just came across this (google translate does a pretty good job):
Now this really applies to me. Not a study but very consistent with what the JSS paper showed. Interesting.