This is a bit of a side quest comment. South Africans are (at least historically) quite different in this respect. Everyone is cold in the winter due to comple

This is a bit of a side quest comment. South Africans are (at least historically) quite different in this respect. Everyone is cold in the winter due to complete disregard for insulation (at least, when compared to Europe). People also don't get layering. The comments about construction do hold mostly. In the warmer areas of the country usually you are cold in the winters for only a couple hours per day. When we go overseas we tend to open all the windows. Maybe this is because we are not used to long winters. My grandparents were experts at opening select windows in their houses to create drafts in the pre-aircon age. There is a meme: "If a guy invites you to a braai at his home at 3am, it really is a braai."