Kristin Stuempfle, a researcher specializing in gastrointestinal distress in endurance running, shares valuable insights from her research on ultramarathon participants at the Western States 100. The discussion explores the complex causes of GI distress, including the effects of hydration, nutrition, and the microbiome. Kristin emphasizes tailored nutrition strategies, the significance of familiar foods, and the potential benefits of ginger. Innovative approaches like mouth-based interventions for cramping are also highlighted, providing listeners with practical tips for managing performance challenges.