Joseph Fourier is perhaps best known for his work studying heat conduction. He developed what we now call Fourier series as part of this work.

I recently learned that Fourier had a personal problem with heat.

Even though Fourier conducted foundational work on heat transfer, he was never good at regulating his own heat. He was always so cold, even in the summer, that he wore several large overcoats.

Source: The Physics Book

He should have stuck with the OEM heatsink on his brain. Obviously his aftermarket replacement was too powerful.

“…and in this state he tripped down the stairs in his house and killed himself”

http://scienceworld.wolfram.com/biography/Fourier.html

Maybe he had Reynaud’s Syndrome?