I experience "internal body heat" after strenuous exercise. It's hard to explain what internal body heat is, but it can't be cooled by air conditioning. It feels like something in my body is giving me extra heat. It is not fever as my temperature is normal. It goes away next day, but so uncomfortable at night.
The typical exercises which induce this is mountain hikes or hard cardio circuit.
I have no health problems.
I'm curious about this and if anyone has experienced it