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We welcome Dr. Michael Grandner back to the show - he's the Director of the Sleep & Health Research Program, and the Behavioral Sleep Medicine Clinic, both at the University of Arizona.
Michael and Neil cover everything from polyphasic sleep to pandemics and everything in between, but much of the conversation revolves around the myriad things that humans have done to screw up sleep for the entire species.
LINKAPALOOZA
Dr. Michael Grandner on Twitter
MichaelGrandner.com
Dr. Michael Grandner is a licensed clinical psychologist and behavioral sleep medicine specialist at the University of Arizona. He directs the Sleep and Health Research Program and the Behavioral Sleep and Circadian Medicine Clinic, and serves as Associate Director for Translational and Behavioral Science at the university’s Center for Sleep, Circadian, and Neuroscience Research.
His research examines how sleep interacts with cardiovascular and metabolic health, cognition, mental health, longevity and the social and environmental conditions that shape sleep. He has published hundreds of scientific articles and chapters, contributed to the American Heart Association’s Life’s Essential 8 framework, and is a past president of the Society of Behavioral Sleep Medicine.
Grandner has been one of The Snooze Button’s recurring scientific voices from the beginning — partly because Neil keeps asking questions, and partly because Michael has repeatedly made the mistake of answering them.
MENTIONEDDr. Michael Grandner
Michael’s website, research, publications and media work.
MichaelGrandner.com
Sleep and Health Research Program — University of Arizona
The research program Michael directs, focused on sleep health, behavioral sleep medicine and the social and biological factors that shape sleep.
University of Arizona Sleep and Health Research Program
At Day’s Close: Night in Times Past — A. Roger Ekirch
The book Michael references while discussing historical “first sleep” and “second sleep.” Later scholarship has added substantial nuance to the idea that segmented sleep was once universal.
At Day’s Close
Adverse Impact of Polyphasic Sleep Patterns in Humans
A 2021 National Sleep Foundation consensus review published after this episode. It found no scientific evidence supporting the claimed benefits of extreme polyphasic schedules and advises against schedules that substantially restrict or fragment sleep.
PubMed: Polyphasic Sleep Consensus Review
Behavioral and Psychological Treatments for Chronic Insomnia Disorder in Adults
The American Academy of Sleep Medicine guideline that recommends CBT-I for chronic insomnia and advises against using sleep hygiene as a stand-alone treatment.
PubMed: AASM Insomnia Treatment Guideline
Narcolepsy and COVID-19: Sleeping on an Opportunity?
The 2020 commentary by Fabian-Xosé Fernandez, Julie Flygare and Michael Grandner discussed in the episode.
PubMed: Narcolepsy and COVID-19
Project Sleep
The nonprofit sleep-health organization founded by Julie Flygare, who appears in the following episode to talk about narcolepsy.
Project Sleep
Mind After Midnight
A 2026 University of Arizona research project led by Grandner and colleagues examining whether nocturnal wakefulness changes decision-making in ways that increase suicide risk — a direct continuation of one of the research threads discussed near the end of this episode.
University of Arizona: Mind After Midnight
You know meditation teacher Jeff Warren from apps like Calm and Ten Percent Happier - here, he leads an exclusive guided sleep meditation for subscribers to The Snooze Button podcast.
Neil admits to being a bit of a fanboy here - he's been listening to Jeff Warren meditations for years as part of the Ten Percent Happier app; here, they discuss the ways that meditation can help your sleep, how to start a meditation practice, and Jeff even leads a guided 8-minute sleep meditation toward the end of the show.
Plus, Neil's got details about a terrific offer for healthcare workers (and now grocery and food delivery workers, too) that can get you a no-strings attached six-month FREE subscription to the Ten Percent Happier app.
LINKAPALOOZA: Website: https://jeffwarren.org/Facebook: https://www.facebook.com/jeffwarren.org/
Instagram: https://www.instagram.com/_jeffwarren_/?hl=en
YouTube: https://www.youtube.com/channel/UCUOpVNy60LTCmAwfZ6zOroQ
Do Nothing Project: https://jeffwarren.org/event/do-nothing-project/
Books: https://jeffwarren.org/books/
Consciousness Explorers Club: http://cecmeditate.com/
BONUS Ten Percent Happier Offer https://tenpercent.com/careJeff Warren is a Canadian meditation teacher, writer and former journalist whose work focuses on making contemplative practice practical, flexible and accessible — especially for people who do not think of themselves as “meditation people.”
Before teaching meditation, Jeff worked in journalism, including CBC Radio’s The Current and Ideas, and wrote about neuroscience and consciousness for publications including The New York Times, Discover and New Scientist. He is the author of The Head Trip, a travel guide to sleeping, dreaming and waking consciousness, and co-author with Dan Harris and Carlye Adler of the bestselling Meditation for Fidgety Skeptics.
In 2011, Jeff founded the Consciousness Explorers Club, a nonprofit meditation community built around a pluralistic approach to practice. His guided meditations have since reached millions of people through platforms including Calm and Happier Meditation, formerly Ten Percent Happier.
MENTIONEDJeff Warren
Jeff’s home base for writing, guided meditations, courses, events and his current work.
JeffWarren.org
Meditation for Fidgety Skeptics — Dan Harris, Jeff Warren and Carlye Adler
The bestselling book built around Dan and Jeff’s cross-country meditation road trip. The original conversation casually describes Jeff and Dan as the co-authors; Carlye Adler is the book’s third co-author.
Meditation for Fidgety Skeptics
The Head Trip — Jeff Warren
Jeff’s book exploring sleeping, dreaming, waking consciousness and other states of mind.
The Head Trip
Happier Meditation
The meditation app discussed throughout the episode as Ten Percent Happier. The company renamed the app Happier Meditation in 2024.
Happier Meditation
Consciousness Explorers Club
The nonprofit meditation community Jeff founded in Toronto, built around experimentation, shared practice and the idea that “being human takes practice.”
Consciousness Explorers Club
Mindfulness-Based Interventions for Insomnia — Meta-Analysis
Useful research context for the episode’s central question. Randomized-trial evidence suggests mindfulness-based interventions can improve insomnia symptoms for some people, while results vary by outcome and intervention.
PubMed: Mindfulness-Based Interventions for Insomnia
Ever been lying in bed, trying to sleep, and you just get the urge to move your legs? Or the feeling that if you don't, you're going to jump out of your skin?
Meet a man who's devoted an entire career to Restless Legs Syndrome and Periodic Limb Movement - Dr. Richard Allen just received the Outstanding Scientific Achievement Award from the Sleep Research Society, and we get into the weeds about what causes RLS in the first place, and what we can do about it.
Richard P. Allen, PhD (1938–2020), was a psychologist and sleep researcher in the Department of Neurology at the Johns Hopkins University School of Medicine and one of the most influential scientists in the modern study of restless legs syndrome.
He founded and co-directed the Johns Hopkins Sleep Disorders Center and, with Dr. Christopher Earley, established the Johns Hopkins Center for Restless Legs Syndrome. He also served as chair of the Restless Legs Syndrome Foundation’s Medical Advisory Board, chair of the International Restless Legs Syndrome Study Group and president of the World Association of Sleep Medicine, now the World Sleep Society.
Allen played a central role in developing modern RLS diagnostic criteria, standards for scoring periodic limb movements and treatment approaches involving brain iron deficiency, intravenous iron, dopamine and dopaminergic augmentation. He published more than 300 peer-reviewed papers on sleep disorders and received the Sleep Research Society’s 2020 Outstanding Scientific Achievement Award.
He died on December 9, 2020. In 2022, Johns Hopkins established the Richard P. Allen Lectureship in Sleep and Circadian Rhythms to support an annual keynote lecture and trainee award in his memory.
MENTIONEDSleep Research Society — In Memoriam: Richard P. Allen, PhD
A concise account of Allen’s career, scientific contributions and legacy in RLS research.
Sleep Research Society memorial
Richard P. Allen Lectureship in Sleep and Circadian Rhythms
Johns Hopkins established the lectureship in 2022 in Allen’s memory.
Johns Hopkins Neurology Lectureships
Restless Legs Syndrome Foundation
Science-based education, treatment information, specialist resources and patient support for people living with RLS.
Restless Legs Syndrome Foundation
International Restless Legs Syndrome Study Group
The international research organization Allen helped lead, focused on RLS and related conditions including periodic limb movements.
IRLSSG
Current AASM Treatment Guideline for RLS and PLMD
Useful 2026 context for a field that has evolved since this conversation, particularly around iron treatment, gabapentinoids and the long-term augmentation risk of dopamine agonists such as pramipexole.
Treatment of Restless Legs Syndrome and Periodic Limb Movement Disorder
Boring Books for Bedtime
Sharon Handy’s sleep podcast comes up when Richard explains that, on a bad night, he gets out of bed and reads something interesting enough to occupy his mind — but not interesting enough to keep him awake.
Boring Books for Bedtime
The Idiot — Fyodor Dostoevsky
Richard’s middle-of-the-night reading material at the time of the interview.
Read The Idiot at Project Gutenberg
If the first thing you think of when you hear the word "hypnosis" is a Vegas act making people bark like a dog, this episode is for you. If you've tried just about everything to fix your sleep and are ready to try just about anything, it's for you, too.
Neil enters the conversation about hypnosis and sleep from a skeptical perspective. See if Dr. Dyan changes his mind, and maybe yours, too.
LINKAPALOOZA:
Dr. Dyan's Website The discount code to save 50% off Dr. Dyan's "Deep & Easy Sleep" Self-Hypnosis package is HEAL2020 - get the package and apply the code here. The free video and eBook called The 3 Biggest Problems with Sleep & the ONE Thing You Can Do by 3pm Today to Sleep Better can be accessed via www.selfhypnosisforhealing.com/sleepDr. Dyan Haspel-Johnson is a licensed psychologist whose work includes clinical hypnosis, sleep and insomnia, chronic pain, mindfulness and mind-body approaches. Her current website lists psychology licenses in California, Colorado and Texas.
She is a co-founder of the Los Angeles Erickson Institute, a Past President and former Vice President of Programs for the Southern California Society for Clinical Hypnosis, and an Approved Consultant for the American Society of Clinical Hypnosis. She has also contributed extensively to Thrive Global.
At the time of this 2020 conversation, she described herself as licensed in California and Colorado and was already specializing heavily in hypnosis for sleep.
MENTIONEDDr. Dyan Haspel-Johnson
Current website, clinical background, sleep resources and self-hypnosis material.
https://www.drdyan.com/
The Truth About Hypnosis
Dyan’s page addressing common fears and misconceptions about hypnosis, including control and what the experience is like.
https://www.drdyan.com/truths-about-hypnosis/
American Society of Clinical Hypnosis
The professional organization Dyan identifies with in the episode; she is currently listed by her own site as an Approved Consultant.
https://asch.net/
APA Division 30 — Society of Psychological Hypnosis
The American Psychological Association division devoted to hypnosis research, education and clinical standards.
https://www.apa.org/about/division/div30
Society for Clinical & Experimental Hypnosis
A professional organization focused on hypnosis research, education and clinical practice.
https://www.sceh.us/
Deepening Sleep by Hypnotic Suggestion
A controlled sleep-laboratory study relevant to the episode’s question about whether hypnotic suggestion can influence slow-wave sleep.
https://pubmed.ncbi.nlm.nih.gov/24882909/
Prepare to toss aside much of what you've heard about dreams - Dr. Celyne Bastien walks us through dreams, nightmares, lucid dreaming, somnambulism and the different stages of dreaming.
Plus, a ton on sleep apnea, and even bedwetting.
LINKAPALOOZA
Sleep On It! from the Canadian Sleep Society
Dr. Bastien's page at Laval University
The CERVO Brain Research Centre
From the publisher's feed
In North America alone, there are about 100 million people with sleep issues. Maybe you’re one of them. Every week, veteran broadcaster Neil Hedley sits down with celebrities, high achievers and…