Actually, I have to forgive my wife for turning up the temperature sometimes. When she had her first knee replacement, she developed a staph infection bad enough that I had to learn how to manage her at-home thrice-daily antibiotic infusions. But that was necessary because her infection got really bad - systemic, in fact - and she was hospitalized again (briefly) after initially going home after that surgery. Let me tell you, that staph infection kicked her butt. She is much better now, her other knee replacement went really well, and no infections the second time. She has no trouble walking around the house all day. But the aftermath of that infection is that you can say "icicle" and she starts shivering.
Then again, some folks become sensitized to certain things. My Dad could just walk past running water and he would have to hit the toilet. And my dear wife says she has had to remove the word "beans" from her vocabulary when she is near me.