Yeah cause your point of reference is feeling like shit when you are feverish.

Actually, there are some studies that show a anti-depressive effect from exposure to heat/fever like conditions. These are just two from a rudimentary Google search to check if I was remembering correctly. https://pmc.ncbi.nlm.nih.gov/articles/PMC6519523/ https://www.colorado.edu/asmagazine-archive/node/2080