Just sharing my ongoing experience with doing a version of @chad vo2 block. I’m on week 3 of what will be a 5 week “plan”. Week one I did Bluebell (18x1min @ 120%) for Tues and Thurs, week 2 I did a custom workout with 12x1.5min at 120%, and this week I did Dade -1 (9x2min @ 120%), next week will go to 2.5mins and then finally 3min. On the weekend I’ve done some over-under work and sweet spot.
Even this week’s 2min intervals were quite doable (not to say easy, but there were no signs of quitting even at the last interval), but there are a lot of variables at play in my situation. I’ve been doing these based on 275w FTP, which I lowered from 295w after a week’s vacation in February.
I might have recovered some of the lost watts, but based on some endurance workouts I don’t think I’m back to where I was (the aerobic efficiency isn’t where it was prior to vacation), so I don’t think I’m underestimating my target here. At this point I’m more interested in completing this at the current level and “successfully” completing the workouts. But it’s hard for me to make any conclusions to attribute too much to any one factor when it’s likely I’m both benefiting from this progression and just naturally getting back to where I was training previously.
Hope to report back in a couple of week’s time with a final assessment!