I used to hate the gym but now I actually kinda like it?? — my results so far

JenPlateau said:

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

That reframing is the part I needed.

Clinical perspective, offered as context rather than as advice. Whatever the answer turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public, and invite the correction. That is slower than asserting, and it is the only version that survives being wrong.

Happy to go further on any of that.

claudia_zurich said:

It helps to say which part of this you are uncertain about.

Worth saying that the confident version of this is more useful to the person writing it than to the person reading it.

Adding the numbers, since they settle part of this. For anyone reading later: the numbers in this thread are worth checking against a primary source before you act on them, including mine. Half the figures circulating in this community trace back to a secondary summary that dropped a qualifier.

I would rather be corrected than agreed with, if it comes to it.

Moderator note: the sourcing question belongs in the vendor section and has been split out.