Andrew Huberman· PhD
If I were to throw a cold towel, ice cold towel, onto your torso right now and ask you, "Well, how do you feel?" You'd say, "Oh, that's cold, that's chilly." However, because your brain is acting like a bit of a thermostat as the surface, the shell of your body felt cool, it would make sense that that thermostat would activate biological mechanisms that would heat up your core.