Thanks for the response, Sam!
Hmmmm, I think some of the trouble is that I’m having trouble figuring out my AeT. I did a heart rate drift test (running outside on flats) a couple of weeks ago, but it didn’t seem very accurate. My starting heart rate after warming up was 131 and training peaks said my Pa:Hr was 12%. But according to MAF my AeT should be closer to 140-150? I attributed the heart rate drift results to my legs getting pretty sore, as I don’t really run on flat pavement at all (most of my running is just jogging downhill after hiking uphill, as most of my hiking is the straight up/ straight down variety). Also, there was a bigger than I expected hill in my neighborhood I had to walk up to keep my HR down in the second half (took maybe a couple of minutes), I wonder if that also could have thrown things off. Since I got a heart rate monitor I’ve been focusing on going slower, and most of the previous summers my exercise has been more pushing a bike uphill/ pedaling at max effort up something steep and then riding down. This is the first summer I’ve been doing significantly more hiking than riding. Anyway, I suppose a HR drift test on a treadmill at a steeper grade would be a more effective test, but I don’t plan to go anywhere near a gym for a bit with the covid. Nose breathing, seems like I can definitely sustain the mid 130’s? Any advice on figuring this out? Definitely planning to add in some Z3 intervals. Thanks again!