Episode Summary
Executive Summary: Andrew Huberman explains why colds and flus are more common in winter: shorter days, colder weather, more time indoors, closer contact, and drier heated air that can impair nasal defenses. He emphasizes nasal breathing, humidifying indoor air, and avoiding close contact with sick people as practical ways to reduce risk, while previewing a future episode on cold/flu prevention and the effects of cold exposure and breathing protocols.
Main Topics: Why winter increases cold and flu transmission (Priority: 5/5): Winter brings shorter days, colder temperatures, and more indoor time, all of which increase opportunities for respiratory virus spread. Physical proximity and contagion (Priority: 5/5): Transmission risk rises with closeness to infected people, especially in shared indoor spaces, and contact via hands, saliva, and surfaces can also spread illness. Dry indoor air and nasal defenses (Priority: 5/5): Heated indoor air dries nasal passages, weakening a key first line of defense against viral, bacterial, and fungal infections. Nasal breathing versus mouth breathing (Priority: 4/5): Nasal breathing is presented as protective, while mouth breathing is associated with higher susceptibility to respiratory illness and other health issues. Humidity, sleep, and immune resilience (Priority: 4/5): Humidifying air, especially at night, and maintaining good sleep are framed as ways to support the body’s ability to fight off infections. Fever, cold exposure, and future AMA topics (Priority: 3/5): Huberman notes fever can help fight infection but must be managed carefully, and previews a later discussion on cold exposure and breathing protocols.
Key Arguments: Colds and flus are genuinely more prevalent in winter months, not a myth. A major reason for winter transmission is that people spend more time indoors and in closer proximity. The closer you are to someone sneezing or coughing, the higher the chance of infection. People who are actively sneezing or coughing from a cold or flu are still contagious, regardless of claims that they are not. Heated indoor air dries the nasal passages, which weakens a primary barrier against infection. Nasal breathing helps protect against respiratory illness because the nose filters and traps pathogens. Humidifying indoor air, especially during sleep, can help preserve nasal and respiratory defenses. Sleep deprivation can worsen the severity of illness symptoms. Fever is an immune adaptation that can help suppress viruses, though dangerously high fever must still be treated. Cold exposure and certain breathing practices may have benefits, but could be counterproductive if someone is already sick.
Data Points: Premium subscription cost: $10/month - Price for the Huberman Lab premium channel Annual subscription cost: $100/year - One-time payment option for a 12-month premium subscription Research funding match: Dollar-for-dollar match - Tiny Foundation matches funds raised for research through the premium channel Free episode access: First 20 minutes - Non-subscribers can hear the first 20 minutes of the episode Day-length variation example: Tromsø, Norway near the North Pole - Used to illustrate extreme seasonal changes in daylight Distance examples: 1 foot, 3 feet, 6 feet - Referenced as proximity ranges affecting transmission probability Core body temperature note: Fever can be dangerous at highly elevated temperatures - Huberman cautions that fever has benefits but also limits Paper title: Association of Oral Breathing with Dental Mal-Iclusions and General Health in Children - Cited as evidence linking oral breathing with worse health outcomes
Pivotal Quotes: "the closer the proximity, the more likely that you're gonna contract the cold or flu from that person" — Andrew Huberman: Explaining how physical distance affects transmission risk "anytime someone is sneezing or coughing, they are in fact contagious" — Andrew Huberman: Warning against assuming a sick person is no longer infectious "oral breathing is related to a significantly higher prevalence of allergies and a significantly more likely getting sick and taking medication for being sick" — Andrew Huberman: Summarizing evidence favoring nasal breathing over mouth breathing
Implications: Listeners should prioritize nasal breathing, humidified indoor air, and distance from sick people during winter. The episode also signals future guidance on cold/flu prevention and cautions against assuming cold exposure or breathing protocols are safe when already ill.
About The Huberman Lab
The Huberman Lab podcast is hosted by Andrew Huberman, Ph.D., a neuroscientist and tenured professor in the department of neurobiology, and by courtesy, psychiatry and behavioral sciences at Stanford School of Medicine. The podcast discusses neuroscience and science-based tools, including how our brain and its connections with the organs of our body control our perceptions, our behaviors, and our health, as well as existing and emerging tools for measuring and changing how our nervous system works. Huberman has made numerous significant contributions to the fields of brain development, brain function, and neural plasticity, which is the ability of our nervous system to rewire and learn new behaviors, skills, and cognitive functioning. He is a McKnight Foundation and Pew Foundation Fellow and was awarded the Cogan Award, given to the scientist making the most significant discoveries in the study of vision, in 2017. Work from the Huberman Laboratory at Stanford School of Medicine has been published in top journals, including Nature, Science, and Cell, and has been featured in TIME, BBC, Scientific American, Discover, and other top media outlets. In 2021, Dr. Huberman launched the Huberman Lab podcast. The podcast is frequently ranked in the top 10 of all podcasts globally and is often ranked #1 in the categories of Science, Education, and Health & Fitness.