SleepDoc_PDX said:

The useful move here is to separate what is established from what is widely repeated.

Right, and the exception is worth naming rather than left implied, because the exception is where people get into trouble.

nick_SD_fit said:

Exercise transformation with training: went from barely able to walk a block to completing a half marathon last Saturday.

Thank you — that is the clearest version of this I have read, and I have read a lot of them. Sending this to two other people who asked me the same thing last week.

SleepDoc_PDX said:

The useful move here is to separate what is established from what is widely repeated.

I read this differently from SleepDoc_PDX, on substance rather than tone. The objection nobody has made: this only works if the measurement is doing what we assume it is doing, and that assumption has not been tested here.

One concrete data point for the thread. If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way. Most of the apparent contradictions in these threads dissolve at that step.

Moderator note: reminder that nothing in this thread is medical advice, and that clinical claims need a source. Report rather than reply if it drifts again.