

The Matt Walker Podcast
Dr. Matt Walker
The Matt Walker Podcast is all about sleep, the brain, and the body. Matt is a Professor of Neuroscience at the University of California, Berkeley. He is the author of the book, Why We Sleep and has given a few TED talks. Matt is an awkward British nerd who adores science and the communication of science to the public.
Episodes
Mentioned books

29 snips
Dec 22, 2025 • 20min
#119 - Your Brain On GLP-1s
The discussion dives into the fascinating roles of GLP-1 agonists in brain health, noting their presence in memory centers. Animal studies reveal their neuroprotective effects, reducing inflammation and aiding learning. The conversation highlights the crucial link between metabolic health and sleep, suggesting a holistic approach to brain care. Limitations in translating animal findings to humans are addressed, and caution is urged regarding GLP-1s as a potential miracle cure. Ultimately, it emphasizes the intricate connections among metabolism, sleep, and brain well-being.

41 snips
Dec 15, 2025 • 19min
#118 - A Sleep Medication to Lower the Risk of Alzheimer's
Explore the fascinating connection between sleep and Alzheimer's disease. Learn how the brain's glymphatic system cleans out harmful proteins during deep sleep. Discover the impact of just one night of poor sleep on toxic protein levels and brain aging. The discussion turns to innovative sleep medications that may help reduce these toxins. However, prioritizing natural sleep habits remains crucial for brain health. This enlightening conversation offers hope and optimism about the future of sleep medicine.

24 snips
Dec 8, 2025 • 57min
Ask Me Anything Part 23: The Gut, Grief, Creativity, and Microsleeps
Join sleep scientist Eti Ben Simon as she delves into the intricate relationship between sleep and health. Discover how sleep deprivation affects gut health and learn about probiotics that might help. They candidly discuss the intertwining of grief and insomnia, offering strategies to improve sleep during sorrowful times. Explore how REM sleep boosts creativity and problem-solving, revealing techniques like Edison's napping method. Finally, they highlight the dangers of microsleeps and potential tech solutions to combat drowsy driving.

24 snips
Dec 1, 2025 • 18min
#117 - Can Creatine & Exercise Overcome Sleep Deprivation?
Explore the alarming effects of sleep deprivation on our bodies. Discover how creatine acts like a 'quick charge' for the brain, restoring energy levels and cognitive function. Learn about high-intensity interval training's role in preserving glucose tolerance and mitochondrial health. Exciting studies show that both creatine and exercise can help mitigate the short-term consequences of sleeplessness, highlighting their importance as temporary aids. However, the conversation emphasizes that nothing can truly replace the restorative benefits of a good night's sleep.

24 snips
Nov 24, 2025 • 26min
#116 - 40 Hz Brain Stimulation
Dive into the fascinating world of 40 Hz gamma rhythms, known for their role in high-order cognition. Discover how non-invasive light and sound can synchronize brain activity and potentially aid Alzheimer’s patients by encouraging immune cells to clear toxic plaques. Unpack the paradox of 40 Hz stimulation that can surprisingly promote sleepiness while improving mood and insomnia. With promising yet preliminary results, this exploration hints at a future where brain entrainment could revolutionize our approach to cognitive health.

25 snips
Nov 17, 2025 • 17min
#115 - Sleep Deprivation for Depression
Explore the intriguing idea of using sleep deprivation as a rapid treatment for depression. Discover its surprising origins in the 1970s and the phenomenon of temporary remission followed by a high relapse rate. Uncover the neuroscientific theories behind why this method might work, including the calming of hyperactive brain regions. Dive into contrasting clinical experiences and a recent meta-analysis that questions its long-term efficacy. This discussion sheds light on the complexities of sleep's role in mental health.

111 snips
Nov 10, 2025 • 26min
#114 - How to Boost your HRV
Dive into the fascinating world of Heart Rate Variability (HRV), where a healthy heart dances like a jazz drummer instead of ticking like a metronome. Discover how quality sleep is your secret weapon for boosting HRV, and learn why even slight sleep disturbances can hit hard. Uncover the power of exercise, particularly HIIT, to enhance heart flexibility and how stress-reducing techniques can calm the chaos. Plus, find out how substances like alcohol and caffeine can impact your heart health. It's all about nurturing that vital balance!

73 snips
Nov 3, 2025 • 32min
#113 - Modafinil: An All-Nighter In A Pill?
Explore the fascinating world of Modafinil, the "all-nighter in a pill." Hear how Olympic sprinters exploited it for an edge and dive into its brain-boosting effects. Discover its journey from a narcolepsy treatment to a favorite among military and tech professionals. While it enhances wakefulness and motivation, serious ethical questions arise about cognitive inequality and long-term risks. Ultimately, it’s a reminder that no pill can substitute for the restorative powers of sleep.

38 snips
Oct 27, 2025 • 23min
#112 - How Synesthesia Secretly Shapes Your Reality
Discover the intriguing world of synesthesia, a phenomenon that suggests we all experience cross-sensory associations in some form. Delve into the Bouba/Kiki test, revealing universal sound-shape connections. Explore how these mappings shape language, art, and even memory, giving synesthetes unique cognitive advantages. Learn about the surprising links between childhood toys and lifelong sensory perceptions. From musicians who see colors in music to the connection with autism, this journey shows how our brains blend senses to construct a rich reality.

67 snips
Oct 20, 2025 • 20min
#111 - The Price of Sleep
Sleep is reimagined as a vital economic asset rather than just a need. Sleep deprivation costs the U.S. economy up to $411 billion annually due to decreased productivity and increased healthcare costs. Extended wakefulness can impair cognitive function similarly to intoxication, raising safety concerns. By investing in sleep programs, businesses can see significant returns, while individuals enjoy better financial outcomes linked to adequate rest. Ultimately, prioritizing sleep is framed as an investment yielding benefits for both personal well-being and economic prosperity.


