this post was submitted on 17 Oct 2023
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There is some evidence that the body will do that while you are undergoing intense exercise, IE at or above the aerobic threshold, but everything we know says it goes right back to normal once you slow down. The idea you will use the same amount of energy regardless is simply nonsense.
What you said, is the same as what I said.
You do understand the "aerobic threshold" is the limit is your lung capacity, right? You need to be absolutely sprinting for this to take place.
I had to remind myself what AT was as your explanation differed from my memory. AT is the limit at which you can do exercise for hours; you have used the the glycogen in your muscles (moved from anaerobic exercise to aerobic); this is where oxygen from your lungs is supplying your muscles along with the fuel. This is much slower then using the stored glycogen; you don't need to sprint to get to the AT; but you will get there much quicker if you do, consistent exercise at a lower level will use up the glycogen and force you into aerobic exercise mode.