I have just done Taylor+1 and yes, my HR was lower than it would be in ,eg. Mount Grant.
That is because the intervals are short and you have 30sec easy recovery between.
But did you find your HR didn’t recover to such a low number as you got to the last set? So you/I were having to start each interval at a slightly higher HR, which I assume results in the intervals getting harder to perform .
Mine was 3 sets of 20. I could have done another set ,but would have had to drop the intensity (from 105% to 100%) to complete it.
This may be why I can manage this type of vo2 workout, but really struggle when they start lengthening the intervals to 3 and 4 minutes. I have to lower thw intensity.
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