According to a new study out of the University of Nottingham in England, the temperature of your nose is directly connected to how hard your brain is working. Try eating a hot jalepeno or hatch chili in Pueblo and trust me, your nose won't be cold.
The more mentally exhausted people were, the colder their noses got, regardless of the weather
Why? The researchers think it's because your brain is using most of the blood you've got available when you're working hard . . . so there's not much left for the rest of your face.