Like many of us (as I’ve read on other posts) I have problems surviving Over/Unders intervals, so I want to train them. I’m currently on a MV plan on a Base Phase, on Thursdays I should do Threshold Intervals (Crater, then Fernow, then Byers Peak -2), after that I have a rest week and then another Build Phase with Over and Unders once a week.
I was thinking about replacing those threshold intervals workouts with progressive Over and Unders workouts, so I can reach that Build Phase better prepared for those Over and Unders.
But then I wondered, if from a physiological point of view both exercises target the threshold zone, will there be any advantage in doing that or is it just as effective to maintain threshold exercises proposed by the plan?
What do you think? what do you recommend?