There seems to be a lot of people in this thread conflating "feeling" hot with having an elevated metabolic rate, but I think these will be at best coincidental

There seems to be a lot of people in this thread conflating "feeling" hot with having an elevated metabolic rate, but I think these will be at best coincidentally concordant. Anecdote vs anecdote, my wife is always cold, but she's the naturally-thin-never-exercises one, whereas I am the ever-sweaty always-hot one that exercises regularly, and I'm usually overweight. Or, for example, patients with fever have an objectively elevated temperature by definition, and usually report chills (and ask for extra blankets). https://en.wikipedia.org/wiki/Doubly_labeled_water https://en.wikipedia.org/wiki/Doubly_labeled_water