# Using Play to Rewire & Improve Your Brain | Huberman Lab Essentials

Source: https://www.youtube.com/watch?v=BRG4_KfTxbs
Recap page: https://rapidrecap.app/video/BRG4_KfTxbs
Generated: 2026-01-29T13:42:07.741+00:00

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## Quick Overview

Play is the most powerful portal to neuroplasticity throughout the lifespan because engaging in play triggers the release of endogenous opioids while keeping adrenaline (epinephrine) low, which opens up the prefrontal cortex to explore new contingencies and expand the brain's capacity for change.

**Key Points:**
- Play is generated through connectivity involving the periaqueductal gray (PAG), a brain stem area rich with neurons that release endogenous opioids like enkephalin.
- The release of these endogenous opioids allows the prefrontal cortex, responsible for executive function, to become 'smarter' by exploring different contingencies and taking on new roles.
- Effective play requires low amounts of adrenaline (epinephrine) and a focus/seriousness that correlates with the liberation of endogenous opioids, contrasting with high-stakes situations that inhibit the play circuitry.
- Play serves as contingency testing in a low-stakes environment, allowing individuals to expand their catalog of potential outcomes and discover proficiencies and limitations in social interactions.
- Optimal forms of play for expanding plasticity include novel forms of movement, such as dance or sports involving dynamic movements like jumping and leaping, which engage the vestibular system.
- Non-physical play that promotes plasticity involves activities like chess, which forces players to adopt multiple identities and rulesets within a single game, unlike rigidly linear video games.
- The neurobiological circuits for play do not disappear after development; biology does not waste resources, confirming the importance of play throughout adulthood for ongoing plasticity.

**Context:** Andrew Huberman, a professor of neurobiology and ophthalmology at Stanford School of Medicine, presents this Huberman Lab Essentials segment focusing on the biology, psychology, and utility of play for adults as well as children. The discussion centers on redefining play not merely as a childhood activity or sport, but as a critical mechanism for cognitive enhancement and lifelong neuroplasticity driven by specific neurochemical states.

## Detailed Analysis

Play fundamentally serves as contingency testing in low-stakes environments, which is crucial for expanding the prefrontal cortex's functional capacity throughout life. Biologically, play evokes the release of endogenous opioids from the periaqueductal gray (PAG), a brain stem region; this opioid release, coupled with low levels of the stress hormone epinephrine (adrenaline), creates the optimal neurochemical state for neuroplasticity. This state allows the prefrontal cortex to explore novel contingencies and roles without the rigidity associated with high-stakes decision-making. Effective play involves focused engagement without excessive stress about the outcome, enabling the brain to deploy growth factors like brain-derived neurotrophic factor (BDNF) to rewire circuits. Huberman highlights that play postures, like the human head tilt with open eyes and soft eyes, signal this playful state. For maximizing plasticity, he recommends activities involving dynamic movement, such as dance or dimensional sports, which engage the vestibular system, and complex cognitive activities like chess, which require adopting multiple roles. Furthermore, reflecting on one's personal play identity established around ages 10 to 14—including competitiveness, cooperativeness, and role preference (leader vs. follower)—provides a portal into adult social interactions, emphasizing that development is a continuous lifespan arc where play circuits remain vital.

### Neurobiology of Play

- Play evokes small amounts of endogenous opioid release from the periaqueductal gray (PAG)
- Low epinephrine levels are essential for play circuitry engagement
- The combination of high opioids and low epinephrine opens the prefrontal cortex to new operations

### The Function of Play

- Play is exploration of contingencies, answering 'if I do A, what happens?'
- It expands the catalog of potential outcomes in a low-stakes environment
- It is powerful for making the prefrontal cortex more plastic and able to change in response to experience

### Play Postures and Signaling

- The universal head tilt with open eyes signals play in humans
- Soft eyes (opened eyelids) and slightly pursed lips are indicators of playfulness
- Partial postures, like keeping fur down during rough play, signal non-aggressive intent

### Enhancing Neuroplasticity

- Play is the most powerful portal to plasticity because it deploys growth factors inside the low-stakes environment
- Novel forms of movement, like dance or multi-dimensional sports, engage plasticity via the vestibular system/cerebellum
- Chess is recommended as a non-physical play that requires adopting multiple character roles during the activity

### Personal Play Identity

- Four components define personal play identity: how you play, personality, sociocultural environment, and technology
- Early play preferences (competitive vs. cooperative, leader vs. follower) impact adult interactions
- The brain retains play circuits because biology does not waste resources, making play important throughout life