> You get used to it.

I tried. I wanted to see if I could get used to it and save some money on AC and be more environmentally friendly in my permanent WFH situation. I tried for a month but never got used to it. I was just uncomfortable and sleepy all the time.

at what % humidity?

That is the thing, I won't. Only a 2-4 months out of the year are hot here, the rest of the time it is colder. So in order to "get used to it" I would need to be year around, and to keep my home at 80 degrees' year round would be much more impactful to the climate than keeping my home a comfortable 70 in the summer, and then 65 in winter, spring, and fall