Science Vs Science Vs

Stress: The Science of Chilling Out

Sep 24, 2026 · 40m

Summary

Hosts Wendy Zuckerman and Meryl Horn explore the science of stress, revealing that moderate adversity can build resilience while chronic stress disrupts cortisol systems. They debunk viral vagus nerve stimulators, noting that free methods like slow breathing and exercise offer stronger evidence for regulation. Experts explain how reframing stress as a "challenge" rather than a threat can improve performance and reduce anxiety. The episode concludes with findings that interacting with living animals, not just textures, effectively lowers stress levels.

Topics discussed

Intro: The stress epidemic and today's topics Sponsors: Valentino Beauty and ADT Security Segment start: Is all stress bad for us? Research: Adversity builds resilience (Mark Sircary) Reflection: Finding net positives in hard times Chronic stress: Cortisol dysregulation and body toll Signs of chronic stress and the threat response The challenge response: Testosterone vs. Cortisol Study: Reframing stress improves test performance Study: Karaoke and the power of 'I am excited' Applying stress reframing to daily life and limits Sponsors: LinkedIn, Gatorade, United, and Bior Anatomy: What is the vagus nerve? Vagus nerve function: Rest, digest, and restore Vagus nerve stimulators: FDA approval and conflicts Free vagus stimulation: Slow breathing techniques Saunas and cold plunges: Evaluating the evidence Exercise as stress: Building resilience through movement Summary: Key takeaways on managing stress Study: Petting live animals reduces anxiety Outro: Credits and final sponsor (Anthropic)
Listen ad-free on Castria