Just wondering about the SSBHV intensities. I find the difficulty of the intervals substantially different at 88% of FTP versus 94% of FTP.
If you are trying to build fatigue resistance would you be better off doing multiples of 20+ min intervals at 88% FTP versus multiples of 10 min at 94% FTP with a 4 min RI. I’ve seen many references to Sweet Spot being 90% of FTP, above that and the intervals are getting into Threshold range. My personal opinion is that 94% of FTP is too intense for a base plan.
Thoughts?