I’m historically terrible at FTP tests. A 20 minute test gives me a number that is so low it’s useless. I did several years of ZA by basically guessing at my FTP and adjusting if the workouts were too easy. Now I do ramp tests and I’ve done them enough that I know “how” to do them and try to get a number that is semi accurate as far as workout difficulty. I still don’t hesitate to adjust it manually if I need to though.
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