I learned this Sudarshan Kriya technique at the Happiness course taught by Sri Ravi Shankar's the Art of Living program. This is NOT AN INSTRUCTIONAL VIDEO. I do this kriya yoga every day. The mudras are not taught by Art of living. Winfast pvr2 windows 7 64 bit. I was taught the mudras from a different guru before taking the Happiness program.

Breathing techniques are regularly recommended for relaxation, stress management, control of psychophysiological states, and to improve organ function. Yogic breathing, defined as a manipulation of breath movement, has been shown to positively affect immune function, autonomic nervous system imbalances, and psychological or stress-related disorders. The aim of this study was to assess and provide a comprehensive review of the physiological mechanisms, the mind–body connection, and the benefits of Sudarshan Kriya Yoga (SKY) in a wide range of clinical conditions. Various online databases searched were Medline, Psychinfo, EMBASE, and Google Scholar.

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All the results were carefully screened and articles on SKY were selected. The references from these articles were checked to find any other potentially relevant articles.

SKY, a unique yogic breathing practice, involves several types of cyclical breathing patterns, ranging from slow and calming to rapid and stimulating. There is mounting evidence to suggest that SKY can be a beneficial, low-risk, low-cost adjunct to the treatment of stress, anxiety, post-traumatic stress disorder, depression, stress-related medical illnesses, substance abuse, and rehabilitation of criminal offenders. INTRODUCTION The environmental pollution, increased pace of life, psychosocial disturbances, eating habits, and sedentary lifestyle have increased stress levels and their related disorders.[] Yoga, an ancient Indian science, has been practised as a healthy way of life. Recently, yoga has been adopted as an approach to health within alternative medicine.[] Relaxation exercises aim at reducing stress, and thereby help prevent these unwanted outcomes. One of the widely used relaxation practices is yoga and yogic breathing exercises. Yogic breathing, Pranayama, is a unique method for balancing the autonomic nervous system and influencing psychological and stress-related disorders.[] One specific form of these breathing exercises is Sudarshan Kriya Yoga (SKY) which is shown to have favorable effects on the mind–body system. Neurophysiological model of vagus nerve stimulation pathways SKY consists of a specific sequence of varying breathing rates separated by brief periods of normal breathing.

Strained breathing occurs in nature when an animal is defeated in battle.[,] It inhibits activity, increases brain perfusion, increases attention and vigilance (via vagal afferents), slows heart rate, restores energy, prevents hypoxia/hypercapnia,[,] and prepares the animal to protect itself. Many studies demonstrate the effects of yogic breathing on brain function and physiologic parameters, but the mechanisms have not been clarified. Biological postulations from neurophysiological model of vagus nerve stimulation of yogic breathing propose that SKY causes vagus nerve stimulation (VNS) and exerts numerous autonomic effects including changes in heart rate, improved cognition in Alzheimer's disease, improved bowel function, etc.

During SKY, a sequence of breathing techniques of different frequencies, intensities, lengths, and with end-inspiratory and end-expiratory holds creates varied stimuli from multiple visceral afferents, sensory receptors, and baroreceptors.[] These probably influence diverse fiber group within vagus nerves, which in turn induces physiologic changes in organs, glands, and ascending fibers to thalamic generators, the limbic system, and cortical areas. This may account for rapidity and diversity of SKY effects like experience of calmness and relaxation combined with increased vigilance and attention[,,] (for a detailed description of proposed neurophysiological pathways, see Brown and Gerbarg).[] Sudarshan Kriya may work like mechanical hyperventilation and electronic unilateral VNS which lead to stimulation of thalamic nuclei resulting in quieting of frontal cerebral cortex.[] The Ujjayi practice makes the practitioner feel calm. The proposed mechanism would be a shift to parasympathetic dominance via vagal stimulation. Respiratory sinus arrhythmia (RSA) refers to normal heart rate increases during inspiration and heart rate decreases during expiration.

RSA is influenced by sympathetic and vagal (parasympathetic) input, and by respiratory rate and volume. Slow yoga breathing induces oscillations of blood pressure and exaggeration of the normal RSA. Low RSA is usually found in individuals with depression, anxiety, panic disorder, and functional dyspepsia. Ujjayi breath increases RSA by increasing parasympathetic influences.[] Bhastrika causes autonomic sympathetic activation and CNS excitation on electroencephalogram (EEG),[,] with activation of temporo-parietal cortical areas, producing rhythms that are similar to the gamma frequency bands hypothesized to reflect synchronization of neural assemblies.[] The subjective experience is of excitation during Bhastrika, followed by emotional calming with mental activation and alertness. INFLUENCE OF SKY ON ENDOCRINE SYSTEM According to the neurophysiological model of VNS by yogic breathing, it is assumed that SKY mainly exerts its endocrine effect by modulating the hypothalamic–pituitary–adrenal (HPA) axis, which is essential for fight and flight response and survival of humans. It is likely that SKY releases prolactin, vasopressin, and oxytocin via vagal afferents to the hypothalamus and anterior pituitary.