Resurrecting this thread, as I’m looking to build a 4 week VO2 block into my program for next year. Historically, on the trainer, I can handle VO2 interval sets up to ~1 minute in length pretty well, but I die with 90 second or longer.
Thoughts on this proposed progression (yes, it’s only 3 weeks, I’m not sure if the 4th week will be an “on” week or a recovery)? I’m planning on 2 days / week (adding a 3rd if I feel good) for the VO2 sessions, and then adding in easy (<= 60% FTP) endurance workouts for the rest of the days.
