Listen to the wisdom of huberman. He talks a lot about it and cold plunging.
Discussion
link to your favorite episode or content on it?
Here's a short one just talking about the protocols: https://www.youtube.com/watch?v=7aYArAYghUA
and a full in depth one : https://www.hubermanlab.com/episode/dr-susanna-soberg-how-to-use-cold-and-heat-exposure-to-improve-your-health
Just consult Seinfeld… 