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.
So maybe you spend 10 weeks or so or 12 weeks or so focusing mainly on endurance, where three workouts per week on endurance work, 80% of those workouts, meaning 80% of the time you're below that burn threshold, you are not experiencing a burning sensation, but that for 20% of it, you are. That, based on the scientific data, should support lactate metabolism, brain health, et cetera, as well as cardiovascular health and oxygen utilization.
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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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And again, about 80% of the endurance work should not incorporate that so-called "burn," but if 20% of that work or so, I should say approximately 20% of that work, does include the so-called "burning sensation," that burning sensation actually triggers the activation of release of certain compounds and molecules from glia, this brain cell type that supports neuron health. And actually, the lactate system is its own form of fuel for the brain. And so there's increasing interest in generating the lactate or pushing past that lactate threshold for small portion, 20% or so, of endurance work in order to support brain health and function.
And actually the lactate system is its own form of fuel for the brain. And so there's increasing interest in generating the lactate or pushing past that lactate threshold for small portions 20% or so of endurance work in order to support brain health and function.