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Science of Stress, Testosterone & Free Will | Dr. Robert Sapolsky

Huberman Lab30 de agosto de 20215303
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Descripción del Episodio

In this episode, I interview Dr. Robert Sapolsky, Ph.D., Professor of Biology, Neurology & Neurosurgery at Stanford University. We discuss stress, what defines short-term versus long-term stress, and how stress can be beneficial or detrimental, depending on the context. We also discuss stress mitigation and how our sense of control over stress mitigation techniques, including exercise, determine health outcomes. Dr. Sapolsky explains some of the key effects of the hormone testosterone — how it can amplify pre-existing tendencies for aggression or sexual behavior, but that it does not produce those behaviors per se. He also explains how testosterone impacts our social hierarchies, sense of confidence, and willingness to embrace challenges of different kinds. He also explains how our behaviors and perceptions shape testosterone levels. And we discuss estrogen and the powerful role it plays in brain development, health and longevity. Finally, we discuss free will, what it means to have free will, and if we have any free will, including how knowledge alone might allow us to make better decisions for ourselves and society. 

Read the full show notes for this episode at hubermanlab.com.

Thank you to our sponsors

AG1: https://athleticgreens.com/huberman

LMNT: https://drinklmnt.com/hubermanlab

Waking Up: https://wakingup.com/huberman

Momentous: https://livemomentous.com/huberman

Timestamps

00:00:00 Introduction: Dr. Robert Sapolsky  

00:02:25 Sponsors: AG1, LMNT & Waking Up

00:06:30 Stress: Short & Long-Term, Good & Bad  

00:09:11 Valence & Amygdala  

00:11:00 Testosterone: Common Myths vs. Actual Truths  

00:15:15 Behaviors that Affect Testosterone  

00:17:20 Mindsets & Contexts that Affect Testosterone  

00:20:28 How Finger Length Ratios Reflect Prenatal Hormone Levels  

00:22:30 Aggression: Male-Female, Female-Male, & Female-Female  

00:24:05 Testosterone: The Challenge Hypothesis  

00:29:20 How Dopamine Impacts Testosterone & Motivation  

00:32:32 Estrogen: Improves Brain & Longevity BUT TIMING IS KEY  

00:39:40 Are Testosterone & Sperm Counts in Males Really Dropping?  

00:42:15 Stress Mitigation & Our Sense of Control  

00:51:35 How Best to Buffer Stress  

00:57:04 Power of Perception, Choice & Individual Differences  

01:00:32 Context-Setting, Prefrontal Cortex & Hierarchy  

01:11:20 How Dr. Sapolsky Accomplishes Deep Thinking  

01:13:17 Do We Have Free Will?  

01:20:50 How to Apply Knowledge & Learning  

01:23:44 Robert’s New Book: “Determined: The Science of Life Without Free Will”  

01:28:27 Reflections, Support of Podcast, & Supporting Stress Research  

Disclaimer & Disclosures

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