[Bjorn]

Thanks Scott for your answer, it´s helping a lot.

I assume being a FT due to my training background (alpine racing in youth and large amounts of telemark/backcountry skiing in adulthood) as well as my current physical state with large strong thighs that are more easily fatigued and needs more recovery compared to my friends. E.g. this is notable both after a 1h z2 run, where I currently need at least 48h to recover, and when doing intervals, where I can produce a huge amount of power the first round – but drop a lot of power for the second round if I don’t have a massive amount of rest in between (+10 minutes…).

A follow-up question: Is it of any value with longer (2-4h) sessions in lower z1 or recovery zone to regain my lost aerobic capacity – or will it only add fatigue?