Accelerate Learning & Increase Cognitive Capacity | Dr. Tommy Wood
Dr. Tommy Wood, a neuroscientist at the University of Washington, discusses how to enhance neuroplasticity and cognitive performance at any age. He provides science-based tools, including specific exercises, dietary strategies, and mental approaches like embracing the "clutch state," to improve learning, memory, and reduce dementia risk.
Deep Dive Analysis
22 Topic Outline
Defining Neuroplasticity and Brain Change
Neurogenesis vs. Synaptic Plasticity in Adults
Maintaining Cognitive Function with Age: Novelty vs. Familiarity
Processing Speed Training for Dementia Risk Reduction
Potent Plasticity Inducers: Dance, Sports, Arts
Overcoming the Shame of Being a Beginner
Flow States vs. Clutch States in Performance and Learning
The Power of Consistent Practice and Effort
Optimizing Focused Work and Eliminating Distractions
Nutrition for Brain Health and Dementia Prevention
Critical Nutrients and Supplementation Strategies
Evaluating Efficacy and Safety of Supplements and Peptides
Stimulants: Feeling vs. Actual Performance
Exercise and Enhancing Cognitive Function
Long-Term Cognitive Health and Exercise Intensity
Cortisol: Acute vs. Chronic Stress Benefits
Resistance vs. Aerobic Exercise for Brain Structure
Modifiable Risk Factors for Cognitive Decline and Dementia
Shingles Vaccine and Dementia Risk
Managing Concussion and Traumatic Brain Injury (TBI)
Supplements and Physical Therapy for TBI Recovery
Strongman Competition and Athletic Challenges
9 Key Concepts
Neuroplasticity
The brain's ability to change in response to inputs, allowing it to better navigate and survive its environment. This involves making new, strengthening, or weakening existing synaptic connections, and pruning unnecessary ones, continuously throughout life.
Synaptic Pruning
The process of removing or down-regulating synaptic connections that are not needed or are decreasing accuracy. This is a crucial part of brain development and the refinement of functions, continuing throughout life to optimize neural circuits.
Processing Speed
The speed at which one can process and remember information, distinct from simple reaction time. Training to improve visual or auditory processing speed, often through tasks with brief stimuli, has been shown to improve cognitive function and reduce dementia risk.
Flow State
A state of optimal performance where an individual is fully engaged in a task that is just beyond their current skill level, often accompanied by a sense of ease. It is considered a maximal expression of a complex learned skill, not necessarily a state for optimal learning.
Clutch State
A state of optimal performance where an individual is highly aroused and performing at their best, but it still feels like hard cognitive and physical work. Unlike flow, it involves significant effort and focus to overcome challenges, and is crucial for learning and pushing capabilities.
Mind Diet
A dietary pattern combining elements of the Mediterranean and DASH diets, specifically designed to prevent neurodegenerative delay and reduce dementia risk. It emphasizes nutrient-dense whole foods like seafood, vegetables, berries, and whole grains.
White Matter
Comprising approximately 60% of the human brain, white matter consists of myelinated axons that rapidly conduct information between different brain regions. Its structure and function are crucial for cognitive health, and resistance training specifically benefits it.
Gray Matter
The outer, wrinkly part of the brain (cortex) and deeper nuclei, primarily composed of neuronal cell bodies and dendrites, involved in processing information. Aerobic exercise has been shown to particularly benefit gray matter, including the hippocampus, and memory.
General Adaptation Response
A concept describing how stress drives adaptation by diverting resources to respond to external stimuli, leading to physical, cognitive, or neurological growth. Acute, intermittent stressors are essential for building resilience and function, contrasting with detrimental chronic stress.
11 Questions Answered
Neuroplasticity's primary role is to allow the brain to respond to inputs, enabling individuals to better navigate and survive their environment through learning skills, remembering people, things, and facts.
No, the adult brain makes only a tiny number of new neurons, primarily in the olfactory bulbs and dentate gyrus of the hippocampus, but not in most other brain regions. Brain change in adulthood is mainly driven by altering connections between existing neurons.
Both are important; continuing cognitively demanding hobbies helps maintain existing function, but engaging in novel cognitive activities (e.g., language learning, complex motor skills) has been shown to improve function, particularly executive function.
Optimal focused learning sessions typically last about 60 to 90 minutes, potentially broken into smaller chunks (e.g., 20-30 minutes with breaks), as the brain can only sustain hard cognitive work for limited periods.
Diet impacts brain health through energy availability, nutrient density, and overall pattern. Maintaining balanced energy intake, consuming sufficient critical nutrients (D, iron, omega-3s, B vitamins, magnesium, zinc), and following a whole-foods pattern like the Mind Diet are crucial.
No, stimulants can dissociate how one feels from actual performance; people may feel they are performing better on certain complex cognitive tasks while actually making more errors or performing worse.
For immediate cognitive enhancement, a 20-30 minute jog or a short resistance training workout (e.g., a couple of sets of 8-12 reps of compound movements) is effective, as it boosts arousal and improves cognitive function without being exhaustive.
No, acute, intermittent increases in cortisol (e.g., from high-intensity exercise) are crucial for driving adaptation and can improve hippocampal structure and function over time. Chronic stress, however, is detrimental.
Fourteen modifiable risk factors account for about 45% of dementia cases, including early life education, high blood pressure, diabetes, hearing loss, vision loss, brain trauma, high LDL cholesterol, low physical activity, and social isolation.
Large observational studies suggest that the shingles vaccine is associated with a decreased risk of dementia, potentially due to reducing shingles cases, immunomodulatory effects, or suppressing other herpes viruses that may contribute to dementia risk.
After immediate medical evaluation, focus on preventing hyperthermia (staying cool), regulating blood sugar (avoiding sugary foods and alcohol), and considering supplements like creatine (0.4g/kg/day), magnesium (400mg 1-2x/day), and omega-3s (a few grams/day long-term).
13 Actionable Insights
1. Embrace the ‘Clutch State’ for Learning
Actively seek out and engage in challenging tasks that feel like hard work and require intense focus, even if they are difficult or frustrating. This ‘clutch state’ is crucial for driving neuroplasticity and achieving peak performance, as it pushes you beyond current capabilities and fosters growth.
2. Engage in Novel Motor-Cognitive Skills
To enhance broad neuroplasticity, learn new skills that combine motor and cognitive challenges, ideally in a social environment. Examples include learning a new ball sport, martial art, musical instrument, or ballroom/line dancing, as these stimulate multiple brain networks simultaneously.
3. Prioritize Processing Speed Training
Incorporate activities that specifically challenge and improve visual or auditory processing speed, especially as you age. This can involve tasks where information flashes briefly, requiring quick processing and recall, which has been linked to reduced dementia risk.
4. Minimize Distractions for Deep Work
To achieve deep, focused cognitive work and optimize learning, eliminate all distractions by closing email, putting your phone in another room, and turning off notifications. Consistent periods without distraction can retrain your brain to focus better.
5. Optimize Exercise Volume for Cognition
When hard cognitive work is planned for later in the day, cap your exercise volume to avoid exhaustion. A 20-30 minute jog or a short resistance training session (2-3 sets, 8-12 reps per exercise) can boost arousal and cognitive function without draining mental energy.
6. Include High-Intensity Interval Training
For long-term improvements in hippocampal structure and function, incorporate high-intensity interval training (HIIT). Studies show significant, long-lasting benefits from protocols like the Norwegian 4x4, even if it feels very challenging.
7. Combine Aerobic and Resistance Training
Engage in both aerobic and resistance training for comprehensive brain health. Aerobic exercise particularly benefits gray matter and memory, while resistance training improves white matter structure and executive functions like processing speed.
8. Test Nutrient Levels for Brain Health
To optimize brain health and reduce dementia risk, get blood tests for critical nutrients like vitamin D, iron, omega-3 fatty acids, and B vitamins (homocysteine levels). Supplement only if deficiencies or suboptimal levels are identified, aiming for target ranges rather than just ’normal’.
9. Avoid Chronic Energy Imbalance
Maintain a balanced energy intake, avoiding both chronic caloric restriction and chronic caloric excess. Both extremes can negatively impact brain volume and cognitive health, with optimal brain function linked to appropriate energy availability.
10. Minimize Major Illnesses for Cognition
Take proactive steps to avoid getting seriously ill, as major illnesses can cause stepwise declines in cognitive function. This includes vaccinations, maintaining a strong immune system, and generally reducing exposure to pathogens.
11. Manage Temperature Post-Concussion
Immediately after a concussion, prioritize preventing hyperthermia by getting to a cool environment. Avoid activities that increase body temperature, as excessive heat can worsen brain injury by increasing energy demands beyond what damaged neurons can produce.
12. Regulate Blood Sugar Post-Concussion
Following a concussion, avoid sugary, refined carbohydrates and alcohol to help regulate blood sugar. Elevated blood sugar is associated with worse outcomes, and alcohol impairs sleep, which is critical for recovery.
13. Return to Physical Activity Post-Concussion
After a concussion, gradually return to physical activity as soon as symptoms allow, under medical guidance, ensuring no risk of further head injury. Start with low-level aerobic activity and progressively reintroduce skill-specific exercises before full training and play.
7 Key Quotes
Essentially, that's its core most important function. If it can't do that, literally none of the other functions matter, you could argue.
Dr. Tommy Wood
Just because we have a fixed number, relatively fixed number of cells doesn't mean that we can't change the connections between those cells. And that's happening all the time. And that is, you know, the main principle of neuroplasticity.
Dr. Tommy Wood
Adults hate being bad at things.
Dr. Tommy Wood
A third of your sessions, training, learning, whatever it is, are going to feel great. You're going to feel really good. You're just going to get stuff, you know, immediately it's going to just come to you. A third will just be average, right? And a third are just going to suck and you just have to show up and get it done.
Dr. Tommy Wood
If you're consistently sleeping fewer than six hours, that's where risk starts to increase.
Dr. Tommy Wood
The best advice, if you have access to it, is to test your levels, test your vitamin D levels, test your hemoglobin and iron levels, test your omega-3 levels, test your homocysteine levels, which is a marker of B vitamin status.
Dr. Tommy Wood
Stress is actually really important because it's the fundamental driver of adaptation.
Dr. Tommy Wood
2 Protocols
Norwegian 4x4 HIIT Protocol for Brain Health
Dr. Tommy Wood- Warm-up adequately.
- Perform 4 minutes of exercise at 85-95% of maximum heart rate.
- Rest for 3 minutes.
- Repeat steps 2 and 3 for a total of 4 intervals.
- Perform this protocol 3 times per week for 6 months.
Concussion Recovery Protocol (Physical Activity)
Dr. Tommy Wood- Ensure immediate medical evaluation for severe injury.
- As soon as symptoms allow, begin low-level aerobic activity (e.g., light walking) a few times a week, at a level just below what makes symptoms worse.
- Progress to non-specific aerobic exercise.
- Gradually reintroduce skill-specific exercises (e.g., sports drills).
- Return to full training.
- Return to playing/competition.