I was brought up in the days before any central heating, and still tend to keep the same ways now as a widow living on my own. So when we got up washed and dressed the bedclothes were thrown back and the window in the bedroom opened. down to breakfast and ready for school, back up to clean teeth and make bed and shut window. Tea time, home and change out of school clothes and hang up, and old clothes put on and window opened for a little fresh air, whilst we sorted out books or found things or whatever, and down to tea. Then after tea if no one was going upstairs for another reason someone would be sent up to close the windows.
So now in this very cold weather, and with my back really painful, I struggle getting up in the morning so, if in a lot of pain put my dressing gown on and have something to eat so I can have painkillers, Then after about half an hour can go and shower and dress etc. Then if I am going shopping or out at all, windows opened while I make shopping list , do emails etc etc. Then windows shut and door locked and off I go. On very cold days, I keep the curtains closed to keep the heat in , generally dont have any heating on after about 8am, and heating on in the evening, but have thermostatic controls on each radiator so can heat where I need to . Bedroom is set lower as I dont like to go to sleep in a warm room. Jobs are also changed round at this time of the year. Things like cooking or ironing are warming kinds of work so are done on colder days, shopping I used to like to do early and get back but now with the lack of the winter fuel etc etc, I am rejigging my routine to do so much shopping , not including frozen things and then call at a warm space church, and go to a cafe where I can have a reasonable time sat in the warm whilst having just one coffee, also belong to Strikes loyalty group where you pay £12 for the year , so £1 a month, for which you get 2 cups of coffee a month , not large cups but nevertheless very welcome. The cafe is at the back of the shop so of course they hope you will spend a lot of money on the way. Ah they havent met me!! I can be quite strict with myself, but again it is somewhere to warm up and they are busy but always have some spare room, so I would be able to sit there for a reasonable length of time. So yes I still do my open window bit, but of course I live alone so only me breathing in here , so not a lot of condensation here