1. Information on the Vagus nerve, also called X cranial nerve or 10th cranial nerve, longest and most complex of the cranial nerves. has the most extensive distribution of the cranial nerves. Its pharyngeal and laryngeal branches transmit motor impulses to the pharynx and larynx; its cardiac branches act to slow the rate of heartbeat; its bronchial branch acts to constrict the bronchi; and its esophageal branches control involuntary muscles in the esophagus, stomach, gallbladder, pancreas, and small intestine, stimulating peristalsis and gastrointestinal secretions.
"Breath of Life: The Respiratory Vagal Stimulation Model of Vagal Activity" -- A Research Paper on the positive effects of Breathwork (and other Contemplative Arts such as yoga & meditation) upon the vagus nerve. frontiersin.org/articles/10.3389/fnhum.2018.00397
" Vagus Nerve: 7 easy ways to access its powers" A reader-friendly webpage that explains the Vagus nerve, its function, and 7 simple ways to positively stimulate it, with links to relevant research.
EXCERPT ON BREATHWORK:
4. Deep breathing exercises
Conscious breathing is the key to stimulating your vagus nerve. Slowing down breathing – Slowing down exhalation phase promotes dominance of the parasympathetic system. Through deep breathing we improve or vagal tone which has a strong effect on heart rate variability.
Singh, U. P. (2017). Evidence-Based Role of Hypercapnia and Exhalation Phase in Vagus Nerve Stimulation: Insights into Hypercapnic Yoga Breathing Exercises. Journal of Yoga & Physical Therapy, 07(03). https://doi.org/10.4172/2157-7595.1000276
Bonaz, B., Sinniger, V., & Pellissier, S. (2016). Vagal tone: Effects on sensitivity, motility, and inflammation. Neurogastroenterology and Motility, 28(4), 455–462. https://doi.org/10.1111/nmo.12817
LINK to entire web page: