The term “Sharira” means “the knowledge” and “Kriya” means “Function”. Sharira Kriya therefore deals with the normal functions of the body and mind. Sharira Kriya is the specialty of Ayurveda which deals with the study of the normal functioning of the body and mind. This subject provides the ground base knowledge of body, mind & senses functions, and dysfunctions which helps in a critical understanding of disease process and insight to disease management and prevention. Physiology is the core of medical wisdom. Its enormous contribution is responsible for the growth of medical technology and clinical management. Physiology is said to be the best friend of the Physician. If we don’t know the normal functioning of the body then it is impossible to treat the abnormal one.