And for a deep rabbit hole, not ad supported, on what we should be eating check out Dr. Michael Greger's book (fully cited)
https://nutritionfacts.org/book/how-not-to-die/ and tons of videos etc at the site
https://nutritionfacts.org/The Iceman, Wim Hoff, has a book and YouTube channel as well...breating plus cold
https://www.wimhofmethod.com/