120 Grams Per Hour: Deciphering the Carbolution Craze - A Deep Dive into Physiology and Research

Link to article

Worm blood seems so much easier


Biased source fyi. This guy’s business is all about lower carb training.

Note that I’m not saying the info is bad/wrong. I don’t know


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i saw this shared on reddit, i’m skeptical. I’m not really well versed in this stuff, but my understanding is that the notion of higher carb consumption interfering with fat burning is baloney.

Again, not being well versed, I wouldn’t be too surprised is if 120g is overkill if someone isn’t producing a ton of watts, I would think lower kj would require lower both overall caloric needs and by extension lower carb consumption, but that’s just a guess, so happy to be proven wrong in this regard

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Not arguing, but I don’t understand your comment. What is “power carb training”? I’m asking because the words sound like he promotes using carbs for power, but the article is about the advantage of using less carbs.

Bro science: Butterfly effect still remains. It depends. You may enter race in different status, even if you precisely targeted for that kind of event. Race conditions are different and have impact for this matter. No just one and only solution but general guidelines because individual athletes with individual biology and chemistry.

There’s one thing that doesn’t make sense to me.

He basically says the extra carbs (above 90) are most likely sitting in the gut and not getting absorbed.

The second possibility, and in my view the most plausible one, is that the unoxidised carbohydrate simply accumulates in the gut.

Yet, there are plenty of people taking in 90-120, or more without GI issues, which pretty much disproves that, at least for that population. Feels to me he’s oversimplifying or getting some things wrong here.


What is their definition of “low intensity cycling”?

Whoops. Typo

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Well, I think a cornerstone of this person’s thesis is that CHO absorption exceeds maximal CHO oxidation during exercise. But the source they cite to support this is a study that had cyclists perform time trials at 55% of max power…or about Z2. Or pretty close to fatmax for most of them, I’m guessing.

So, why would you pick a condition that is the absolute minimum proportion of CHO oxidation proportion to support your assertion that CHO gut absorption exceeds oxidation? I mean, sure that’s true if you’re noodling along but let’s try those time trials again at crit-level intensity and see whether or not CHO oxidation is still outpaced by CHO absorption.

So, in short, when I read through the citations provided it causes me to doubt the assertions the author makes. If somebody here has a different interpretation I would be interested in reading it…


It’s misleading the study was for low intensity , carbs are for high intensity . If you are not burning what you are taking in then obviously it’s too much but if you are hammering for the entire time you need the carbs .

So much this.