Background: In last few decades, the prevalence of hypertension has been drastically increased in India. According to WHO(World Health Organization) and Seventh Report of the Joint National Committee (JNC 7) persons with blood pressure above optimal levels, but not clinical hypertension (systolic blood pressure of 120-139 mmHg or diastolic blood pressure of 80-89 mmHg), are defined as having “Prehypertension”. Shavasana is one of the most popular yogic exercise used for relaxation of body. Aim: Aim of the study is to find out the immediate effect of Shavasana on blood pressure in prehypertensive patients. Methodology: In present study 56 patients with prehypertension were taken, age 30 years – 60 years. Blood pressures were measured before and after the Shavasana. Result: Result showed that Shavasana is beneficial in reducing blood pressure in prehypertensive patients. Conclusion: The practice of Shavasana for short duration immediately improves cardiovascular parameters.