Dr. Wendy Suzuki: Professor of neural science and psychology at NYU, certified exercise instructor, and bestselling author known for pioneering research on how aerobic exercise improves memory, mood, and prefrontal attention function.
What this episode covers
Andrew Huberman and Dr. Wendy Suzuki revisit her research on memory and how movement reshapes the brain. She lays out the four drivers of memorability (novelty, repetition, association, emotional resonance) and the central role of the hippocampus, illustrated by the famous patient H.M. Suzuki recounts how her own transformation from workaholic to gym-goer revealed exercise's cognitive benefits, then walks through the biology (BDNF released via myokine and liver-ketone pathways) and her lab studies on low-fit and mid-fit adults. The episode closes on practical minimums: 10 minutes of walking for mood, two-to-three cardio sessions a week for hippocampal gains, brief daily body-scan meditation, and prioritizing sleep.
Also referenced (named, not recommended)
IntenSati
Patricia Moreno
“the form of exercise that I teach is called IntenSati. That it's a form of exercise that was developed by this amazing, um, fitness instructor, Patricia Moreno”— Wendy Suzuki
Doom
id Software
“we had them play one of those Doom-like games when they went into this spatial maze and they had to do things in a virtual city”— Wendy Suzuki
Big reveals from this episode
- Explains H.M., who lost the ability to form new memories after both hippocampi were removed in 1954 to treat severe epilepsy.
- Argues the hippocampus is not just for memory but for imagination, associating things across past, present, and future.
- Shares that during her tenure push she did nothing but work, gained 25 pounds, and burned out before discovering exercise.
- Reveals her father developed Alzheimer's dementia, which became her motivation to study exercise and the aging brain.
- Cites a 40-year Swedish study where high-fit women gained nine extra years of good cognition versus low-fit peers.
- Reports that in mid-fit adults 'every drop of sweat counted', more weekly workouts meant better mood and hippocampal memory.
- Notes newer studies suggest new neurons are born in the human hippocampus into the ninth decade of life.
Worth remembering
- Four things make information memorable: novelty, repetition, association, and emotional resonance.
- The amygdala flags emotional or threatening events and primes the hippocampus to lock them into long-term memory.
- 'Hippocampus' means seahorse, named for its curved, intertwining anatomy.
- Aerobic exercise releases BDNF, a growth factor that helps new brain cells grow in the hippocampus.
- Just 10 minutes of walking outside can shift your mood via a 'bubble bath' of dopamine, serotonin, and noradrenaline.
- BDNF rises through two routes: a myokine from muscles and the ketone beta-hydroxybutyrate from the liver, both crossing the blood-brain barrier.
- A single 30-minute aerobic session boosts mood, prefrontal Stroop performance, and reaction time for up to two hours.
- The best time to exercise is right before you most need your brain, for most people, the morning.
- Just 10-12 minutes of daily body-scan meditation over eight weeks lowered stress response and improved cognition.
- Her top three tools to boost attention are exercise, meditation, and sleep.