Overall, there is another way to look at this.
- In four to six month’s time I want to know I am as fit (and lean) as I can be (am by then) for the racing season.
- If that means doing a few Z2 sessions that I don’t quite know the underlying logic for, but makes some sense, and they seem to be doing something useful (TT position and pedaling technique) then, hey ho, they are in the schedule and I’ll do them.
- A far better position to be in that having missed them out and thinking, “I wonder if missing them out made the difference”.
I sincerely doubt I will be thinking “I did those Z2 sessions like Pettit and that is why I am so slow and off the pace”.
But hey ho, its an individual call: you pedals your turbo and takes your choice…