Two years later … now 69. What I have noticed in the meantime is that my capacity falls pretty far down if I do not keep doing some kind of TR workouts during the week, between brevets.
This year I am looking at the Sustained Power Build program (low volume) and my plan is to do two of the three suggested. I don’t bother with the weekends, since the brevets take care of that.
The Sustained Power plan is my starting point, but I almost always check out the “Train now” and follow the suggestion quite often. I figure the suggestions are probably more tailored to my present situation than a static plan.
Nice to have choices.
But TR will not stop the aging process only combat it.