Thanks for your reply! Didn’t expect to hear from the man himself!
To answer your question I am not tired after these Z1 & Z2 workouts, my legs feel in pretty good shape with the exception of them feeling a bit heavier on the 1st training day following a big weekend. However I was taking the higher HR to be an indication that I was in fact too fatigued and needed more rest as I am consciously having to go at a slower pace to remain in a strict Z1 HR.
Great info, I shall recalibrate this weekend.
Many Thanks, Love the podcast!