Are you worried about your sleep and health? Are you bothered by lack of sleep or fatigue? Are you suffering from insomnia, sleep apnea, or other sleep disorders? Do you feel your sleep difficulties are getting in the way of being successful, happy, and motivated? Deep into Sleep podcast is here to assist you find the answers. Dr. Yishan Xu is a licensed clinical psychologist, board-certified behavioral sleep medicine sleep specialist, and adjunct clinical faculty at Stanford School of Medicine,…
What if better sleep isn't about trying harder, but about living differently? In this episode, Dr. Yishan welcomes back Dr. Brad Wolgast, PhD, CBSM, DBSM, a board-certified behavioral sleep medicine psychologist and author of the new book "Gold Medal Sleep." Together, we explore why modern life works against our natural sleep rhythm, and why the harder you chase sleep, the further it runs. Dr.…
Research 1 https://doi.org/10.1007/s12013-013-9529-4 Research 2 https://doi.org/10.1016/j.brs.2018.05.016 Research 3 https://doi.org/10.1176/appi.ajp.2019.19070720 Research 4 https://doi.org/10.3988/jcn.2016.12.1.57 This episode explores a rapidly growing area of brain science that is transforming how we treat depression, anxiety, insomnia, OCD, and even cognitive decline — without relying on…
In this episode, we dive into the essentials of obstructive sleep apnea — from recognizing symptoms you might be overlooking to understanding why CPAP remains the gold standard treatment. Dr. Yishan welcomes back Dr. Carleara Weiss, PhD, MS, RN, a sleep scientist, nurse educator, and Sleep Science Advisor at Aeroflow Sleep. Together, we tackle one of the most common challenges CPAP users face: how…
This episode explores the fascinating intersection of culture, spirituality, and sleep. Dr. Yishan welcomes Dr. Bruce D. Forman, PhD, a clinical psychologist specializing in behavioral sleep medicine and the author of "For God's Sake, Go to Sleep" — a book that bridges Jewish wisdom and modern sleep science. Together, we discuss why sleep is biological but insomnia is cultural, how different…
In this episode, host Dr. Yishan welcomes Dr. Nunez, a leading sleep health expert whose team has conducted one of the largest global sleep surveys — spanning 30,000+ participants across 13 countries over six consecutive years. Together, they unpack a paradox at the heart of modern sleep health: why is it that even as sleep awareness grows, most people still aren't taking action to improve their…
In this episode, Dr. Yishan sits down with Dr. Kendall Stewart — a former skull-based surgeon who has spent the past two decades pioneering a data-driven approach to functional medicine, genetics, and neuroimmune health. Together, they explore the biological roots of sleep struggles that behavioral advice alone often can't fix: neurotransmitter imbalances, genetic variants, and inflammation in the…
🎙️ Deep Into Sleep — Year-End Reflection Episode As 2025 comes to an end, this special episode of Deep Into Sleep is a reflection on what a year of conversations has taught me about sleep, the brain, and the people who trust us with their nights. Rather than focusing on a single sleep disorder, this episode brings together four meaningful conversations that shaped how I now think about sleep…
In this episode, Dr. Yishan explores the intersection of cutting-edge technology and sleep health, diving deep into the ways artificial intelligence is shaping the future of sleep research and care. Joining the conversation is Mikael Kågebäck, Chief Technology Officer at Sleep Cycle and a specialist in AI and machine learning. Together, they discuss how large-scale AI-powered data collection—using…
In this episode, host Dr. Yishan welcomes Dr. Nicole Fleischmann, a renowned board-certified urogynecologist and urologist, to delve into a topic that’s rarely discussed: the hidden connections between breathing, pelvic floor health, and women’s well-being. Dr. Fleischmann, author of "The Second Mouth: A Woman's Journey to Decoding a Hidden Language for a New Era in Women's Health," shares her…
Do nightmares keep you awake at night? Wondering if frequent nightmares mean you have trauma—or if they can ever truly be cured? In this powerful episode, Dr. Yishan welcomes Dr. Courtney Worley, nightmare specialist, board-certified clinical psychologist, and co-author of “The Nightmare and Sleep Disorder Toolkit.” Together, they explore what nightmares really are, why they happen (even if you…
