Dr. Rhonda Patrick was on Joe Rogan's podcast and she went into the chief importance of the gut microbiome (https://www.youtube.com/watch?v=sOodMDndr4Q). Like I knew eating healthy/exercise/etc. was all good, but she went in-depth on how crucially important eating the right foods was to so many other systems in your body, and I just had no idea of all of it.