Where I live in the tropics we have ~32 degrees every day all year. I put my AC on 27.5 and think that's more than cold enough. I guess the stable temperature makes the slight difference in temperature (and high difference in air humidity) more noticeable.

Presently located in Launceston, typically have my heat pumps at home set to 19 while I’m awake, 17 when I sleep.

I work in a workshop, so it’s both colder and warmer for longer depending on the season.

The -4 degree mornings don’t effect my cognitive not physical abilities, but the 30+ degree days certainly do. I have to constantly remind myself to slow down.

How's the shock when you go to 30 outside from 19 inside?

It has been 41 here lately and I leave the indoors at 22, and the shock is marvelous. That 41 is at greater than 50% relative humidity, so the big impact is that my sweating starts to be effective again.

Oops.

I mean I leave the heat on 19 during the cooler months.

During summer here I’ll have the cooling set between 21 and 25.