I think the comments above that you may not be taking enough recovery time are probably true, but one other thing is that sometimes if you’re naturally good at short power things like sprints or even 30/30’s, sometimes the FTP detectors (not just TR’s) estimate too high. I personally don’t like the detectors and find that while they swell my ego, they usually predict a good bit higher than what I can achieve in a 30-40 minute threshold interval.
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