This is pure speculation, but I think humans' seasonal temperature adjustments are often not considered enough.<p>Anecdotally, I could be wearing the same pants/shirt inside: when it's routinely 30-35C outside in the summer, I'm quite comfortable with an inside temperature of 22-25C. Then, in the winter when it's regularly 0-5C, an inside temperature of 19-22C is comfortable. It's interesting how personal temperature tolerance varies with the seasons.