If you’ve been anywhere near health optimization circles, you already know Ben Greenfield as a NYT bestselling author, former Ironman triathlete, coach, one of the OGs of biohacking. Today, he’s my guest on the Longevity podcast. We discuss some of the hottest and most practical topics—from Ben’s newly updated “Boundless” book, to why he ditched strict keto in favor of a more Mediterranean approach, and the peptide stacks and self-quantification tools that he’s personally using (and swearing by) right now. Ben opens up about how he reversed a concerning heart scan, gets candid about the realities of advanced blood filtration protocols, and doesn’t hold back when sharing the hilarious (and sometimes disastrous) side of pushing biohacks a little too far—like podcasting on a homemade THC edible or jumping into DIY supplement experiments gone wrong.