Heating the body through sauna use can provide benefits against pathogens by mimicking fever and boosting heat shock proteins.

“what's really cool is that it works both in warm-blooded and cold-blooded animals so if you you know externally raise a cold-blooded animal's body to a warmer temperature they are more resilient to um a pathogen and what that goes to show you in warm-blooded animals at least is that there's this release it's mimicking a fever essentially okay so if you go into a sauna several times a week you are boosting heat shock proteins and essentially you are at those heat shock proteins are increased for 48 hours”