I've heard numerous times that transitioning makes you more susceptible to the cold, and while I do feel colder when I'm cold, it still takes alot for me to actually get cold.
I think my natural body temperature is still pretty high and I can still last for a good long while without any coat or jacket.
No? Idk, im not sure what constitutes a heat injury. I get confused and exhausted in the heat (~30c is about where that starts, anything above ~25c is uncomfortable), but idk if thats a heat injury?