What does ‘micro optimize exercise to this extent’ mean? In the first part they mention studies showing that mere (low intensity) exercise is not sufficient to

What does ‘micro optimize exercise to this extent’ mean? In the first part they mention studies showing that mere (low intensity) exercise is not sufficient to get the desired result. So if you just mean ‘do high intensity exercise’ then the article’s claim would be that it may be necessary to do it to have the desired effect. And the second half is about the author training for cycling up mountains and it basically looks like a reasonably normal thing that someone serious at training for something might write. The point of tracking the numbers is to notice trends which someone who is serious about training would likely care about.