Using heart rate zones

This was previously raised here. An argument against it is that it’s easy enough to fiddle with numbers to get the zones to be as desired, regardless of the base method, i.e. %LTHR, %HRmax, Karvonen, %VO2max. While that’s true, I would love to see more options. Personally, I base all my thinking off HRmax with adjustments for level of athlete then personal variance. I find this far more reliable than any other method. Maybe it’s just how I learned to think about the physiology, since I learned from Seiler who primarily references %HRmax. Another consideration is the programming necessary to add this functionality; something I have zero knowledge about.

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