In this episode of the Flex Diet Podcast, I sit down with Dr. Sara Campbell, Ph.D., Associate Professor at Rutgers University, for a conversation about the bidirectional relationship between exercise and the gut microbiome. Dr. Sara Campbell returns to discuss her lab's cutting-edge research on the bidirectional relationship between exercise and the gut microbiome — including why consumer gut tests oversimplify a complex ecosystem, how antibiotics devastate exercise capacity in animal models, and why single-microbe probiotics miss the bigger picture of functional guilds. She also shares new findings on short-chain fatty acids, amino acid metabolomics after antibiotic treatment, and the emerging neuromuscular junction hypothesis. In this episode you'll learn: Why consumer gut microbiome tests are misleading and what functional guilds tell us instead How antibiotics devastate exercise capacity and the surprising metabolomic changes they cause The current evidence on probiotics for exercise performance and why single strains fall short What short-chain fatty acids do for gut health and exercise, and the emerging neuromuscular junction hypothesis Find Sara here:Rutgers Faculty Page Google Scholar: Sara Chelland Campbell --- The Flex Diet Podcast is brought to you by the Flex Diet Certification. Learn more at miketnelson.com Get the Daily Fitness Insider newsletter (free): https://www.miketnelson.com/newsletter