Healthy young person here: joints are not a problem at 17°C, though I do pack myself in comfortably thick and warm clothing so a lot of that will make it into m

Healthy young person here: joints are not a problem at 17°C, though I do pack myself in comfortably thick and warm clothing so a lot of that will make it into my (uncovered) hands. For me 17 is the limit, but definitely not yet problematic. I do notice in the morning if I forget to turn on the heater (we're on the ground floor but sandwiched between neighbors who seem to keep it toastier) and the room is ~15°C. It takes an hour before I get cold after coming out of bed, but then, yup, typing is one of the things I notice after that time.