The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
I have plenty of athletes that prefer to do many of their training sessions faster the morning for personal reasons not because it enhances performance but if it doesn't enhance or uh harm it then and it's a personal preference thing fine
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Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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There are basically no specific rules as it relates to whether or not you train fasted or train fed except in what you can handle in terms of gastric distress. So you want to make food choices according to that and try and avoid, of course, gastric distress.
And that's another point that I'm trying to make here, which is Dr. Galpin really impressed upon me that there is no hard and fast rule about training fasted or fed.
So the science can lead us in one direction but the actual layering on top of what would I really recommend a human do that in this this scenario matters more. So if you look at the research very specifically on fasting exercise always depends on the type of exercise you mentioned you were really careful about saying like I'm under 60 minutes right I'm under 60 minutes like I know you're you're aware that that answer will change right what am I optimizing for am I optimizing for performance am I optimizing for feeling better that day more focused that day am I optimizing for the happiness the personal like there's so many different reasons why one would exercise that you have to answer all those questions and figure out well what lever am I trying to pull here. What am I trying to get out of it?
Do we have people am I I'll answer this way. Do we ever take somebody and say, "Hey, you need to start doing your endurance work in the morning fasted." I can't think of very many times when we've ever done that. But if somebody shows up with that well, we don't have any strong reason we're not going to pull them off of it either.