Yoga is an ancient Indian art and science of maintaining health and wellbeing. Pranayamas are the breathing techniques explained in yoga. Pranayamas have been reported to have beneficial effects on health by reducing psychosocial stress which are mediated through improvement of autonomic functions^[1,7,9]. Recently, it has been seen that psychosocial stress levels are on the rise in modern society due to change in lifestyle. Chronic psychosocial stress is associated with increased the risk of Non communicable diseases including Hypertension^[21]. Many studies have shown that the slow breathing practices can cause modest reduction in blood pressure^[22-24]. Earlier, studies have been conducted on immediate effects of Uninostril and alternate nostril breathing on Blood pressure. They suggest differential nostril breathing produces distinct autonomic changes^[6,14]. But they involved regular practitioners of Yoga^[6,14]. This study intends to study the immediate hemodynamic effects of slow uninostril and slow alternate nostric Yoga breathing practices on 132 subjects. This study is to assess the physiological effects of certain modified Yoga breathing practices on hemodynamic parameters like Systolic Blood Pressure (SBP), Diastolic Blood Pressure (DBP), Mean Pressure (MP) and Pulse Rate (PR), in healthy adults who are non regular practitioners of Yoga. In this study, slow Yogic Uninostril breathing practices like Chandra-Anulom vilom (CAV) or Left Nostril breathing, Surya-Anulom vilom (SAV) or Right Nostril breathing, Anulom-Vilom (AV) or Alternate nostril breathing are used as intervention.