It would be good to separate the notion of ‘effort’ vs. that of ‘intensity’, i.e., 95-100% effort (subjective by feeling) doesn’t necessarily equal 95-100% intensity (objective by timing).
It would be good to separate the notion of ‘effort’ vs. that of ‘intensity’, i.e., 95-100% effort (subjective by feeling) doesn’t necessarily equal 95-100% intensity (objective by timing).