Sudarshan Kriya Yoga (SKY): Participants will continue to receive their treatment as usual, including pharmacotherapy and/or psychotherapy. Following the initial clinical screening measurements, participants will undergo a 12-week training course conducted by certified instructors from the Art of Living Foundation who will be supervised by one of the study co-investigators (RN). There will be two instructors for this study (one male Spenser Delisle and one female Hiteshini Jugessur) for the initial 6 day course; both are certified as Art of Living instructors of SKY, in addition to being certified to work with traumatized populations. They have had experience of teaching more than 2000 people in multiple settings. Additional certified instructors may conduct follow up sessions. There will always be an overlap between the existing instructor and a replacement instructor, to ensure comfort of study participants. SKY training will take place in group-format (group sizes of 8-15 participants) in an appropriately sized and accessible community hall in London, Ontario. Given that men and women tend to have different sources of trauma, separate groups will be held for each gender. This is in accordance with current practices used in the Trauma Program at LHSC. While the investigators do not anticipate gender differences, the investigators have decided to stratify this study by gender to allow participants in these groups to feel more safe and comfortable, which is key to maximizing benefits of the course. SKY training involves attending a week-long (6 days) course that teaches the basic principles of SKY over 2.5-3 hour daily sessions. This will be followed by once weekly follow up sessions (90 min/wk) for 3 weeks and then bimonthly sessions (every 2 weeks) for the next 8 weeks. In addition, participants will be asked to practice SKY at home daily (25 min/day) throughout the duration of the study period and log practice frequency and any other noteworthy observations in a log sheet that will be provided to them (please see attached log sheet). Nutritional snacks will be provided during the 6 session SKY training course. Information regarding demographic data, past psychiatric history, current ongoing psychological interventions, current medications, smoking and substance use status and any comorbid medical illnesses will be collected at baseline. Any change in status of ongoing psychological interventions, medications, smoking, alcohol and substance use, medical illnesses will be noted at each assessment visit in addition to hospitalizations or ER visits. This information is important to control for confounding factors as well as for risk assessment. The weight and height of patients will be measured at baseline and weight will be measured at each assessment visit to monitor for any effect of SKY yoga on weight (positive or negative). The information will be asked from the patient and/ or collected from the clinical charts if patient is distressed about giving the information, particularly past psychiatric history including trauma. Any adverse effects related to SKY will be monitored using a structured questionnaire, at each assessment visit (week 4, 8, 12 and 24).