I'm a cardiologist and academic and this is an overly detailed look at the Wim Hof Method. If It Ducks Like a Quack is a series where I seek to find the truth (if any) behind high profile medical claims, while attempting to teach critical analysis of scientific statistics. Get 1 no-obligation month of unlimited CuriosityStream at https://curiositystream.com/medlife using the promo code ‘medlife’. Go take a look at the rest of the Human Limits series! ************ A HUGE thank you to Scott Carney. Seriously, if you enjoy this channel you will love his book. Go here: http://scottcarney.com/audible His YouTube is here: null ************ For those that might ask: yes I've tried the technique, quite extensively for over 6 months. But I haven't shared those experiences as they're not relevant to an attempt at unbiased scientific appraisal. More Medlife Crisis: http://www.medlifecrisis.co.uk/ https://twitter.com/medcrisis https://www.facebook.com/Medlifecrisis https://www.instagram.com/medcrisis ------------------ Music: The Dark Glow of the Mountains by Chris Zabriskie, Fly Inverted Past a Jenny by Chris Zabriskie, Take Off and Shoot a Zero by Chris Zabriskie are licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/darkglow/ Artist: http://chriszabriskie.com/ Main references: References Neurocognitive and Somatic Components of Temperature Increases during g-Tummo Meditation: Legend and Reality https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3612090/ Voluntary activation of the sympathetic nervous system and attenuation of the innate immune response in humans https://www.pnas.org/content/111/20/7379.full The role of outcome expectancies for a training program consisting of meditation, breathing exercises, and cold exposure on the response to endotoxin administration: a proof-of-principle study Frequent Extreme Cold Exposure and Brown Fat and Cold-Induced Thermogenesis: A Study in a Monozygotic Twin https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4094425/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4819555/pdf/10067_2015_Article_3009.pdf The Influence of Concentration/Meditation on Autonomic Nervous System Activity and the Innate Immune Response: A Case Study https://www.wimhofmethod.com/uploads/kcfinder/files/WHM_Hopman.pdf “Brain over body”–A study on the willful regulation of autonomic function during cold exposure https://www.sciencedirect.com/science/article/pii/S1053811918300673?via%3Dihub The role of outcome expectancies for a training program consisting of meditation, breathing exercises, and cold exposure on the response to endotoxin administration: a proof-of-principle study https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4819555/pdf/10067_2015_Article_3009.pdf Evolution from four mental states to the highest state of consciousness: A neurophysiological basis of meditation as defined in yoga texts https://linkinghub.elsevier.com/retrieve/pii/S0079-6123(18)30168-7 https://theconversation.com/brain-over-body-hacking-the-stress-system-to-let-your-psychology-influence-your-physiology-111133 Brown adipose tissue https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3661118/ Kirsi, A., Virtanen, M. D., Lidel, M. E., Orava, J., Heglind, M., Westergren, R., Niemi, T., Taittonen, M., Laine, J., Savisto, N. J., Enerbäck, S.,& Nuutila, P. (2009). Functional brown adipose tissue in healthy adults. The New England Journal of Medicine, 360, 1518-1525 Controlled Hyperventilation After Training May Accelerate Altitude Acclimatization [Letter] https://www.wimhofmethod.com/uploads/kcfinder/files/Kilimanjaro.pdf Effect of two breathing exercises (Buteyko and pranayama) in asthma: a randomised controlled trial. https://thorax.bmj.com/content/58/8/674.long Buteyko breathing techniques in asthma: a blinded randomised controlled trial. https://www.ncbi.nlm.nih.gov/pubmed/9887897?itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum&ordinalpos=20 Buteyko Breathing Technique for asthma: an effective intervention. https://www.ncbi.nlm.nih.gov/pubmed/14752538?itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum&ordinalpos=11 A randomised controlled trial of the Buteyko technique as an adjunct to conventional management of asthma. https://www.ncbi.nlm.nih.gov/pubmed/18249107?itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSum&ordinalpos=3