Parental history of hypertension increases the risk of developing future hypertension. Altered sympathovagal nervous system is reported in children of hypertensive parents. Offspring's of hypertensive parents have increased sympathetic reactivity, with no parasympathetic modulation in early life as compared to offspring of normotensive parents. The participants at high risk in our study are young offspring of hypertensive parents although being normotensive but have a higher susceptibility for development of future hypertension. So weight reduction and moderate intensity aerobic exercise programmes should be incorporated in daily living, which may delay or prevent the onset of hypertension. This book is about the Cardiac Autonomic Function and Parental Hypertension in healthy young adults.