I'm in the south east of the UK, but the point I'm making applies almost anywhere in the Western world; it's perfectly possible, and even healthier, to get by at a much lower indoor temperature than most people are accustomed to.
We used to have a guy in my country who was telling us to wear a warmer coat during the winter to compensate for the complete lack of heat. He's no longer with as after 25 December 1989, but people still regret him.