Find the article here: https://jamanetwork.com/journals/jamapsychiatry/article-abstract/2839605 Episode Summary In this insightful episode of The Heart Rate Variability Podcast, host Matt Bennett sits down with Dr. David Eddie, a clinical psychologist and researcher at Massachusetts General Hospital and Assistant Professor at Harvard Medical School. Together, they explore how Heart Rate Variability (HRV) is transforming the landscape of addiction recovery, psychotherapy, and digital mental health. Dr. Eddie shares how HRV can serve as both a biomarker for relapse risk and a tool for emotional regulation, shedding light on how AI, wearable technology, and stress-detection algorithms could revolutionize real-time intervention in substance use treatment. Listeners will gain a deeper understanding of how HRV biofeedback, digital monitoring, and personalized algorithms can support clients in recovery, enhance self-awareness, and inform clinicians’ decision-making in psychotherapy. Key Topics Covered How Dr. David Eddie began his HRV journey during graduate research at Rutgers and the Recovery Research Institute. HRV as a biomarker for pathology and relapse risk in substance use disorder and mental health conditions. Developing stress-detection algorithms that leverage real-time HRV data through wearables and AI. Challenges of variability and individual differences in HRV data across populations. Integrating ecological momentary assessment (EMA) and ambulatory psychophysiological monitoring for clinical insights. How HRV biofeedback supports recovery and emotional regulation in psychotherapy and addiction treatment. Ethical and practical issues around proprietary algorithms, data transparency, and commercial wearables. The future of HRV research, AI integration, and passive monitoring in clinical psychology. Key Takeaways HRV is both a symptom and contributor to addiction and mental health challenges, offering potential for early detection of relapse risk. Wearables and AI can help clinicians intervene in real time — possibly preventing relapse or emotional crises before they occur. Personalized baselines and individual calibration are essential to improve algorithm accuracy for diverse populations. HRV biofeedback provides an accessible, evidence-based method to help clients build resilience, reduce craving, and regulate their nervous system. Future advances will make passive, scalable HRV monitoring a core element of digital mental health and recovery care. About the Guest Dr. David Eddie is a clinical psychologist and researcher at Massachusetts General Hospital’s Recovery Research Institute and the Center for Digital Mental Health, as well as an Assistant Professor of Psychiatry at Harvard Medical School. His work focuses on addiction recovery, psychophysiology, and integrating HRV into digital and clinical interventions. Follow his work at Recovery Research Institute or through Harvard Medical School publications.

Show Notes Resource 1: Title: Associations between mental health disorder symptoms and cardiac function among Royal Canadian Mounted police cadets during the Cadet training program Authors: R.N. Carleton, T.A. Teckchandani, J.P. Neary, J.E. Samayoa, J.M.B. Khoury, K.Q. Maguire, G.P. Krätzig, & G.J.G. Asmundson Publication: Journal of Psychiatric Research Link: https://www.sciencedirect.com/science/article/pii/S0022395625006521 Resource 2: Title: Transgenerational effects of violence in adolescents exposed to grandmaternal intimate partner violence during pregnancy: Heart rate variability and DNA methylation Authors: Nayara Cristina dos Santos Oliveira, Aline Furtado Bastos, Fernanda Serpeloni, & Simone Gonçalves de Assis Publication: Behavioural Brain Research Link: https://www.sciencedirect.com/science/article/abs/pii/S0166432825004735 Resource 3: Title: The role of separation anxiety and autonomic dysregulation in pediatric vasovagal syncope. A cross-sectional study Authors: Gaia Cuzzocrea, Andrea Fontana, Cristiana Alessia Guido, Marta Mascanzoni, Alberto Spalice, Camilla Guccione, Angelos Halaris, Stephen Porges, Lucia Sideli, & Vincenzo Caretti Publication: Journal of Psychiatric Research Link: https://www.sciencedirect.com/science/article/abs/pii/S0022395625006351 Resource 4: Title: Acute cardiovascular and cerebral blood flow responses to high-frequency, low-amplitude vibration on the neck Authors: Viet Q Dinh, Malinda Hansen, K Austin Davis, Lindsey Peralez, & Caroline A Rickards Publication: Journal of Applied Physiology (via PMC) Link: https://pmc.ncbi.nlm.nih.gov/articles/PMC12551627/ Resource 5: Title: Autonomic Flexibility and Early Treatment Success: Heart Rate Variability Predicts Remission in First-Episode Psychosis Authors: Judith Rohde, Samantha Weber, Mateo de Bardeci, Aygün Ertuğrul, Grammato Amexi, Eva Schultz, & Sebastian Olbrich Publication: Schizophrenia Bulletin Link: https://academic.oup.com/schizophreniabulletin/advance-article/doi/10.1093/schbul/sbaf191/8305265?login=false Resource 6: Title: Interplay between ke...

Show Notes Resource 1: Title: Top 50 scariest movies of 2025 (and Fright Night Physiology) Publication: WISN.com / Science of Scare Project Link: https://www.wisn.com/article/top-50-scariest-movies-2025/69140286 Resource 2: Title: Heart Rate Variability as a Key to Regulation and Stress Author: D. N. Solomon Publication: Psychology Today Link: https://www.psychologytoday.com/us/blog/the-narrative-nurse-practitioner/202412/heart-rate-variability-as-a-key-to-regulation-and Resource 3: Title: Haunted House, Healthy Heart Publication: Business Health Trust Link: https://businesshealthtrust.com/news_insights/haunted-house-healthy-heart/ Resource 4: Title: Why Do We Love Being Scared? The Science Behind Horror Movies Author: A. Bennett Publication: Promega Connections Link: https://www.promegaconnections.com/the-science-behind-horror-movies/ Resource 5: Title: Playing With Fear: A Field Study in Recreational Horror Authors: M. M. Andersen, A. Coltan, et al. Publication: PMC (via Emotion) Link: httpss://pmc.ncbi.nlm.nih.gov/articles/PMC7734554/ Resource 6: Title: Scared together: Heart rate synchrony and social closeness in a high-intensity horror setting Authors: M. M. Andersen, et al. Publication: PubMed (via Psychological Science) Link: https://pubmed.ncbi.nlm.nih.gov/40720311/ Resource 7: Title: I tracked my heart rate through the 10 haunted houses of Halloween Horror Nights... Author: K. Weekman Publication: Yahoo.com Link: https://www.yahoo.com/entertainment/article/i-tr...

Show Notes Resource 1: Title: Pleasant odors specifically promote a soothing autonomic response and brain–body coupling through respiratory modulation Authors: Valentin Ghibaudo, Matthias Turrel, Jules Granget, Maëlys Souilhol, Samuel Garcia, Jane Plailly & Nathalie Buonviso Publication: Scientific Reports Link: https://www.nature.com/articles/s41598-025-20422-x Resource 2: Title: Improved non-invasive detection of sleep stages when combining skin sympathetic nerve activity and heart rate variability analysis with AI Authors: Md. Aktaruzzaman & Thomas H. Everett IV Publication: Scientific Reports Link: https://www.nature.com/articles/s41598-025-20282-5 Resource 3: Title: Increased sleep apnea-specific hypoxic burden is independently associated with cardiovascular autonomic dysfunction in obstructive sleep apnea: A large-scale study Authors: Chenyang Li, Zhenger Zhou, Xiaozhen Zhang, Enhui Zhou, Tianjiao Zhou, Jingyu Zhang, Xinyi Li, Jianyin Zou, Huajun Xu, Jian Guan, Yupu Liu, Suru Liu, Xiaoyue Zhu, Weijun Huang, Hongliang Yi, Shankai Yin Publication: Sleep Medicine Link: https://www.sciencedirect.com/science/article/abs/pii/S1389945725005386 Resource 4: Title: Strengthening the heart by means of a gratitude intervention? Authors: Andreas R. Schwerdtfeger, Claudia Traunmüller, Bernhard Weber & Christian Rominger Publication: The Journal of Positive Psychology Link: https://www.tandfonline.com/doi/full/10.1080/17439760.2025.2574048?af=R#abstract Resource 5: Title: Child and marital stress are associated with a psychophysiological index of self-regulatory capacities among parents of preschool children Authors: Sasha MacNeil, Chelsea da Estrela, Warren Caldwell, Jean-Philippe Gouin Publication: International Journal of Psychophysiology Link: https://www.sciencedirect.com/science/article/pii/S0167876025007470?via%3Dihub Resource 6: Title: Factors influencing heart rate variability in nurses following night shifts: a prospective observational clinical study Authors:

Resonance Frequency Breathing Explained In this solo episode of the Heart Rate Variability Podcast, Matt Bennett explores the science and practicality of resonance frequency breathing, a term he notices is often misused. He introduces his AI counterpart, AI Matt, to present the research on resonance frequency breathing, which involves finding a natural rhythm for breathing that aligns with the body's optimal pace. Matt aims to delve into the correct usage of this term, discuss its scientific basis, and share practical applications in the episode. Resonance Frequency Breathing Techniques Matt discussed resonance frequency breathing, explaining that while 6 breaths per minute is often cited, the actual rate can vary based on factors like height. He noted that trained biofeedback practitioners have observed rates as low as 3.5 breaths per minute in special operators and professional athletes. Matt emphasized the importance of synchronization between the heart, breath, and nervous system, as well as the impact on brain functioning. Resonance Frequency Breathing Assessment Matt discussed the concept of resonance frequency breathing, noting that while research suggests an average of 6 breaths per minute, individual rates can vary widely. He explained that resonance frequency assessments involve gradually reducing breathing rate from 7 to 3.5 breaths per minute to find the rate that maximizes HRV. Matt emphasized that while height may influence resonance frequency, factors like fitness and body mass could also affect it, particularly for former athletes. He recommended practicing paced breathing before taking the assessment and suggested that repeated testing might show small changes in breathing rate over time. Breathing Patterns and Resonance Frequency Matt discussed the importance of regularly reassessing one's resonance frequency breathing to ensure accuracy, especially if consistent readings are obtained over several months without significant lifestyle changes. He shared his personal experience with adjusting his breathing patterns, including experimenting with a 4.5 to 3.5 breaths per minute rate and a 2:1 inhale-to-exhale ratio, inspired by recent research suggesting extended exhales can improve low-frequency heart rate variability. Matt emphasized the significance of personalized assessments using tools like the OptimalHRV app to determine optimal breathing patterns and encouraged others to explore different breathing techniques for maximum impact. Residence Frequency Breathing Assessment Matt discussed the importance of practicing residence frequency breathing assessment and emphasized the value of this technique in maximizing breathwork practices. He noted that while the concept is gaining recognition among fitness influencers and in peer-reviewed research, the full impact of the science is often overlooked in blog posts. Matt planned to include relevant research in the show notes and promised to cover this topic further in the next episode.

Show Notes Resource 1: Title: The relationship between heart rate variability and affective disorders: associations with symptomatic improvement and therapeutic alliance Authors: Alexandra F. Gonçalves, Eugénia Ribeiro, Adriana Sampaio, Natividade S. Couto-Pereira, Pedro Moreira & Joana F. Coutinho Publication: BMC Psychology Link: https://bmcpsychology.biomedcentral.com/articles/10.1186/s40359-025-02960-1 Resource 2: Title: Development and validation of the socio-evaluative N-back task to investigate the impact of acute social stress on working memory Authors: Matthias Haucke, Sabrina Golde & Stephan Heinzel Publication: Scientific Reports Link: https://www.nature.com/articles/s41598-025-22611-0 Resource 3: Title: Panic Attack Prediction for Patients With Panic Disorder via Machine Learning and Wearable Electrocardiography Monitoring: Model Development and Validation Study Authors: Hayoung Oh, Hunmin Do, Chaehyun Maeng, Jinsuk Park, Taejun Yoon, Jihwan Kim, Hyeran Hwang, Seoin Choi, & Piao Huilin Publication: Journal of Medical Internet Research Link: https://www.jmir.org/2025/1/e69045 Resource 4: Title: Non-invasive cardiovascular risk stratification in type 2 diabetes: a pulse wave and pulse rate variability analysis with machine learning Authors: Saurav Kumar, Apakrita Tayade, Amber Shrivastava, & Ravi Bhallamudi Publication: Biomedical Signal Processing and Control (via Science Direct) Link: https://www.sciencedirect.com/science/article/abs/pii/S1746809425014491 Resource 5: Title: How Tracking Your Health Metrics Can Help You Live Longer Author: Alice Park (Interview with Zahi Fayad) Publication: TIME Link: https://time.com/7324741/health-metrics-tracking-live-longer/ Resource 6: Title: Stressed at Work? Your Heart Disease Risk Just Jumped 50%. Here’s the One Number That Shows How to Fight Back Author: Julien Raby Publication: BoxLife Magazine Link: https://boxlifemagazine.com/boost-heart-resilience-by-tracking-hrv/ Resource 7: Title: “Resonance Breathing” Is The Anti-Stress Hack You Can Do Anywhere Author: Carolyn Steber Publication:...

Below are the links to the studies and articles discussed in this episode: Personalized Respiratory Guidance for HRV: Lin, Z., Kong, W., Qiu, S., Luo, M., Wei, J., Guo, X., ... & Dan, G. (2025). High-precision personalized respiratory guidance model for enhanced breathing training: effects on heart rate variability. Biomedical Signal Processing and Control, 100, 108720. https://www.sciencedirect.com/science/article/abs/pii/S1746809425012315 Therapy with Local Anesthetics and HRV: Weinschenk, S., Topbas-Selcuki, N. F., Benrath, J., Strowitzki, T., & Feisst, M. (2025). Effects of therapy with local anesthetics (TLA) on heart rate variability (HRV) over 24 hours. Chronobiology International. https://www.tandfonline.com/doi/full/10.1080/07420528.2025.2560963?src=exp-la Veterans, Service Dogs, and HRV: Krause-Parello, C. A., Friedmann, E., Taber, D., Zhu, H., Quintero, A., & Yount, R. (2025). Veterans Training Service Dogs for Other Veterans: An Animal-Assisted Intervention for Post-Traumatic Stress Disorder. Behavioral Sciences, 15(9), 1180. https://www.mdpi.com/2076-328X/15/9/1180 Circadian Rhythm of HRV in Pregnancy: Rasouli, M., Feli, M., Azimi, I., Haghayegh, S., Sarhaddi, F., Niela-Vilen, H., ... & Rahmani, A. M. (2025). Circadian rhythm of heart rate and heart rate variability in pregnancy. npj Women's Health, 3(1), 57. https://www.nature.com/articles/s44294-025-00107-6 Wearable Tech in Tennis Players: Wang, Z. (2025). Integration of wearable technologies in monitoring physical performance and psychological stress in tennis players. Acta Psychologica, 260, 105706. https://www.sciencedirect.com/science/article/pii/S0001691825010194 Acoustic Features of Chants: Dolan, E. W. (2025, October 6). Chants across cultures share features that promote relaxation. PsyPost

In this episode of the Heart Rate Variability Podcast, host Matt Bennett sits down once again with Dr. Inna Khazan, a leading expert in HRV biofeedback and applied psychophysiology. Together, they unpack one of the most fascinating and misunderstood aspects of heart rate variability — low-frequency HRV — and its connection to self-regulation, stress resilience, and overall wellness. Understanding Frequency Domains in HRV Dr. Khazan begins by breaking down the concept of frequency domains in HRV. Just as white light contains multiple colors, the heart rate signal is composed of several distinct frequency components. Using tools like the Fast Fourier Transform, researchers can separate heart signals into high-frequency, low-frequency, and very-low-frequency ranges — each linked to specific physiological processes and parts of the autonomic nervous system. Low Frequency HRV and the Baroreflex The conversation dives deep into low-frequency power, which represents the interplay between the baroreflex (the body’s blood pressure regulation system) and the vagus nerve. Dr. Khazan explains how resonance-frequency breathing—typically practiced for 20 minutes a day—acts like strength training for these systems. Over time, this practice enhances emotional regulation, stress recovery, and overall heart-brain coherence. Why Breathing Rate and Context Matter Listeners learn that breathing too long in a low-frequency state can actually suppress other important HRV components, such as high-frequency and very-low-frequency power. Instead, Dr. Khazan recommends brief, consistent training sessions to balance all aspects of the nervous system. She also clarifies common misconceptions, including the outdated idea that low-frequency HRV measures sympathetic activity, emphasizing instead its parasympathetic and baroreflex origins. Making Sense of HRV Metrics in Optimal HRV Matt and Dr. Khazan discuss Optimal HRV’s “Optimal Zone” scale, which tracks the percentage of time users spend in low-frequency dominance during a session. They also unpack metrics like Max-Min and total low-frequency power, explaining how they interact and what each reveals about training efficiency and day-to-day readiness. Practical Takeaways Practice resonance-frequency breathing for 20 minutes a day to enhance self-regulation. Avoid over-training in the low-frequency zone — balance is key. Understand that low-frequency HRV is not a measure of stress or sympathetic activity, but rather a reflection of vagal and baroreflex strength. Leverage your Optimal HRV app metrics to track progress, focus, and nervous-system adaptability. Listen & Learn More Explore more insights from Dr. Khazan and Matt Bennett on heart rate variability, stress regulation, and biofeedback science. Visit OptimalHRV.com for resources, show notes, and upcoming episodes, including the "This Week in HRV" series, which highlights the latest HRV research and applications.

Welcome to the show notes for this week’s episode – This Week in HRV Edition. Below, you’ll find direct links to all the studies and articles discussed in this episode. These sources represent the latest research connecting HRV to mental health, resilience, environmental design, and leadership. Research Studies: Multisensory environmental effects on HRV and psychological restoration – Scientific Reports Walking through green and grey: Exploring sequential exposure and multisensory environmental effects on psychological restoration – Building and Environment The Impact of Vipassana Meditation on Health and Well-being: A Systematic Review of Current Evidence – Cureus Cardiac timing effects on response speed are modulated by blood pressure, but not by heart rate variability, in healthy young adults – Physiological Reports Heart-brain interaction in emotional regulation – Scientific Reports Environmental stress and HRV in agricultural settings – Agricultural and Forest Meteorology HRV and emotion regulation in depression risk – JAMA Psychiatry HRV modulation through breathing and neural coherence – Frontiers in Human Neuroscience News and Features: Professor honored for pioneering heart–brain research – UC Irvine News Solo practitioner uses HRV tech to improve patient care – Healthcare IT News What is heart rate variability and how can it guide smarter leadership decisions – Manila Bulletin HRV: The new secret weapon for heart resilience – Men’s Health Each of these studies and stories offers a unique perspective on how HRV connects the hear...

In this episode, we review seven new studies published between September 19 and September 25, 2025. Together, they highlight the many ways HRV intersects with brain activity, breathing practices, cardiac recovery, exercise environments, emergency medicine, environmental stressors, and new multimodal measurement approaches. We’ll explore: How brain networks and cognitive load shape HRV readings. Why slow breathing alone is powerful, and what feedback really adds. The Benefits of Yoga Nidra for Patients Recovering from Coronary Artery Bypass Surgery. How walking in natural environments provides a stronger autonomic boost than indoor or urban exercise. Real-world HRV findings in emergency medicine and why lab results don’t always translate. How pollution, heat, and noise suppress vagal tone. New frontiers in dynamic and multimodal HRV metrics. As always, I’ll connect the research to practical, client-ready strategies you can use right away. This podcast is sponsored by Optimal HRV. Learn more at optimalhrv.com. References  Behavioural Brain Research – Neural and cognitive influences on autonomic function. https://doi.org/10.1016/j.bbr.2025.115811 Psychophysiology – Comparing HRV biofeedback and slow-paced breathing. https://doi.org/10.1111/psyp.70156 Cureus – Impact of Yoga Nidra on heart rate variability in coronary artery disease patients undergoing coronary artery bypass grafting. https://www.cureus.com/articles/402202-impact-of-yoga-nidra-on-heart-rate-variability-in-coronary-artery-disease-patients-undergoing-coronary-artery-bypass-grafting-a-comparative-study Psychology of Sport and Exercise – Green exercise randomized controlled trial. https://doi.org/10.1016/j....

Refrences: Ferreira S, Rodrigues M A, Mateus C, Rodrigues P P, Rocha N B. Interventions Based on Biofeedback Systems to Improve Workers’ Psychological Well-Being, Mental Health, and Safety: Systematic Literature Review. Journal of Medical Internet Research (2025). DOI: 10.2196/70134. JMIR+2JMIR+2 Lässing J, Wegener F, Höpker N, Hottenrott K, Gronwald T, Falz R. Heart rate variability response of intensity-matched strength training dependent on body position in females: a pilot randomized crossover study. Scientific Reports (2025). DOI: 10.1038/s41598-025-19817-7. Nature+1 Książek K, Masarczyk W, Głomb P, Romaszewski M, Buza K, Sekuła P, Cholewa M, Kołodziej K, Gorczyca P, Piegza M. Deep learning approach for automatic assessment of schizophrenia and bipolar disorder in patients using R-R intervals. PLoS Computational Biology (2025). DOI: 10.1371/journal.pcbi.1012983. PLOS+1 Zilcha-Mano S, Tchizick A, Nof A, Malka M, Oded Y. Clinical breakthroughs or research oversights? The imperative of integrating modalities to differentiate signal from noise. The British Journal of Psychiatry (First View, 2025). DOI: 10.1192/bjp.2025.10321. Cambridge University Press & Assessment Dear Media. “7 Lab Tests Every Woman in Her 30s Should Know, According to Dr. Sara Szal.” By Jane LaCroix. September 16, 2025. Dear Media

In this episode, Matt Bennett explores how to apply the research on HRV training through muscle contraction into personal practice.   References for this episode.  Fred Shaffer's work: https://youtu.be/ajwgwzn2ZUo Sources for this summary: Vaschillo/Lehrer et al., laboratory demonstration that 0.1-Hz rhythmic skeletal muscle tension increases 0.1-Hz power in heart rate, systolic pressure, and pulse transit time and strengthens HR–BP coupling, consistent with baroreflex resonance; includes with- and without-leg-crossing conditions (N≈37). ResearchGate Shaffer, Moss, & Meehan (2022) randomized study showing that one and six contractions per minute increased multiple HRV metrics versus twelve per minute, with a ~0.10-Hz peak at six per minute. SpringerLink Meehan & Shaffer (2023) within-subjects study showing greater HR, HR max–min, and low-frequency power when adding core contraction and leg-crossing versus wrist-ankle alone at six contractions per minute. SpringerLink Frontiers in Neuroscience review describing the resonance-frequency model and noting that rhythmic skeletal muscle tension, like slow breathing, can stimulate the baroreflex at ~0.1 Hz.

This week’s episode of the Heart Rate Variability Podcast explores three new publications from September 5–11, 2025. We look at advances in contactless HRV monitoring using millimeter-wave radar, how physical fatigue alters time-domain and nonlinear HRV metrics, and a review of how accurate consumer wearables really are when tracking HRV. We dive into what these findings mean for clinicians, researchers, and anyone using HRV to track resilience, recovery, or performance. References Cui, Y., Zhang, W., Xu, J., Liu, Y., & Chen, H. (2025). Non-Contact Heart Rate Variability Monitoring with FMCW Radar via a Novel Signal Processing Algorithm. Sensors, 25(17), 5607. Read here Zhang, J., Niu, X., Wei, X., Ma, J., & Du, W. (2025). Effects of Induced Physical Fatigue on Heart Rate Variability in Healthy Young Adults. Sensors, 25(17), 5572. Read here Pramanik, P. (2025, September 8). Wearable health trackers reveal how accurate your smartwatch really is. News-Medical. Read here

References MacDonald, D. M., et al. (2025). Two-week heart rate variability measurements and lung health: A cross-sectional analysis in the ARIC Study. Respiratory Medicine, 234, 108338. https://www.resmedjournal.com/article/S0954-6111(25)00401-9/abstract Kamiya, Y., Saita, K., Kaneko, F., Li, J., & Okamura, H. (2025). Association between sense of coherence and phasic heart rate variability under psychosocial stress conditions. Physiology & Behavior, 298, 114969. https://www.sciencedirect.com/science/article/abs/pii/S0031938425001702?via%3Dihub European Society of Cardiology. (2025). How wearables are transforming remote monitoring of cardiovascular diseases. ESC 365 session page, ESC Congress 2025. Retrieved September 2025 from https://esc365.escardio.org/esc-congress/sessions/13953? Zhang, S., Niu, X., Ma, J., Wei, X., Zhang, J., & Du, W. (2025). Effects of sleep deprivation on heart rate variability: A systematic review and meta-analysis. Frontiers in Neurology, 16, 1556784.  https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2025.1556784/full Menuet, C., Ben-Tal, A., Linossier, A., Allen, A. M., Machado, B. H., Moraes, D. J. A., … Gourine, A. V. (2025). Redefining respiratory sinus arrhythmia as respiratory heart rate variability: An international expert recommendation for terminological clarity. Nature Reviews Cardiology.  https://www.nature.com/articles/s41569-025-01160-z

Featured Studies Wu, Y-R., Su, W-S., Lin, K-D., & Lin, I-M. (2025). Effect of Heart Rate Variability Biofeedback on Cardiac Autonomic Activation and Diabetes Self-Care in Patients with Type II Diabetes Mellitus. Applied Psychophysiology and Biofeedback, 50(3), 315–327. https://link.springer.com/article/10.1007/s10484-024-09666-x Kula, Y., Iversen, Z., Levine, A.D., & Gidron, Y. (2025). Does Vagal Nerve Activity Predict Performance in a Naval Commando Selection Test? Applied Psychophysiology and Biofeedback, 50(3), 349–357. https://link.springer.com/article/10.1007/s10484-025-09702-4 Addleman, J.S., Lackey, N.S., Tobin, M.A., et al. (2025). Heart Rate Variability Applications in Medical Specialties: A Narrative Review. Applied Psychophysiology and Biofeedback, 50(3), 359–381. https://link.springer.com/article/10.1007/s10484-025-09708-y Wu, D-W., Yang, P-C., & Lin, I-M. (2025). Effects of Heart Rate Variability Biofeedback on Pulmonary Indicators and HRV Indices Among Patients with COPD. Applied Psychophysiology and Biofeedback, 50(3), 383–394. https://link.springer.com/article/10.1007/s10484-024-09664-z Yang, P-C., Lin, I-M., & Wu, D-W. (2025). Effects of Heart Rate Variability Biofeedback on Enhancing Self-Efficacy, Quality of Life, and Six-Minute Walk Test in Patients with COPD. Applied Psychophysiology and Biofeedback, 50(3), 403–416. https://link.springer.com/article/10.1007/s10484-025-09689-y Bufo, M.R., Guidotti, M., Lemaire, M., et al. (2025). Autonomic Disequilibrium at Rest in Autistic Children and Adults. Applied Psychophysiology and Biofeedback, 50(3), 465–480.https://link.springer.com/article/10.1007/s10484-025-09696-z Chakraborty, H., Vinay, A.V., Sindhu, R., & Sinha, R. (2025). Exploring the Immediate Effects of Nadi Shuddhi Pranayama on Heart Rate Variability Among Young Adults. Applied Psychophysiology and Biofeedback, 50(3), 525–533.

In this episode, Matt Bennett welcomes Jarhed Peña Jarhed to the show to discuss how he discovered and applies heart rate variability and HRV biofeedback into his therapeutic work. We cover a wide range of typics, research, and applications of HRV. 

We did it! 200 original episodes of the Heart Rate Variability Podcast. We celebrate with a look back and forward. Thank you for joining us on this journey!

In this episode, Stephanie White joins Matt Bennett to discuss how she utilizes SDNN and CVNN HRV metrics in her work on chronic disease and autonomic dysregulation.  Stephanie uses visual demonstrations throughout this episode. You can see these visuals on our YouTube Channel.  https://youtu.be/gj6DHPSWEVY

In this episode, Matt Bennett interviews Dr. Erik Peper on his recent article Pain - There is Hope. We discuss the nature and experience of pain and factors that can increase or midigate pain.  Erik Peper’s teaching and research focuses on self-healing strategies, illness prevention, the effects of posture and respiration, and how to use biofeedback and wearable devices. Each year he mentors undergraduate student researchers to create and complete studies that are presented at scientific meetings. He is an international authority on biofeedback and self-regulation and author of scientific articles and books such as Make Health Happen, Fighting Cancer-A Nontoxic Approach to Treatment, and Biofeedback Mastery. His most recent co-authored book is, TechStress: How Technology is Hijacking Our Lives, Strategies for Coping, and Pragmatic Ergonomics.  He publishes the blog, The Peper Perspective-ideas on illness, health and well-being (peperperspective.com). In 2013 was received the Biofeedback Distinguished Scientist Award in recognition of outstanding career & scientific contributions from the Association for Applied Psychophysiology. Email: epeper@sfsu.edu Web: https://rpt.sfsu.edu/ihhs Blog: www.peperperspective.com Web: www.biofeedbackhealth.org

In this episode, Dr. Angele McGrady and Dr. Donald Moss join Matt Bennett to talk about how heart rate variability informs their Pathway Model. We discuss their new book: Pathways through Long-Term Health Conditions: Lifestyle Medicine to Maximise Your Wellbeing.