I am not sure that is true, at least from my experience. As the GP I get hot during the night and my wife is freezing, and although I have never measured my bo

I am not sure that is true, at least from my experience. As the GP I get hot during the night and my wife is freezing, and although I have never measured my body temp my wife always says that she can feel how my body can irradiate heat. At the beginning I thought she was joking but after many years and empirical testing (when she says she can feel heat I am hot) I feel it is true. And this always happens if I ingest carbs for dinner, always. About what you say, I am not sure the brain processes that it feels hot because the temperature from outside of your body is higher than yours but because your body is actually hotter than usual and one of the reasons could be because the environment temp is actually heating up your body. But I am not a neurologist or even close so I may be completely wrong.