My mom would agree. She was just at my apartment and was wondering why I have all my windows open. She was freezing and I refused to turn on the heat. I did close the windows for her which were opened once she left.
I think I just adapt well to temperature changes. Two months ago it was 100º. So when it become 70 I was cold. I have drifted into where 30º is warm enough I sleep with my windows open.
25º on Tuesday.. Might be closing windows then.