how do you quantify 10%?
Training Peaks constantly updates my Ant (I think?) and I monitor my Aet via conversation pace r nose breathing pace but what exactly is 10% here? 10% of the difference between resting heart rate and max heart rate? IE: resting heart rate 60 max 180 = 10% is 12bpm? my training peaks has me peged at 165 for Ant and I nose breathe with my beard frozen shut at 145 for an hour straight so is that about 15% spread?

I’m trying not to geek out too much here but your lecture has me geeking out too much, sorry not sorry 🙂