Ayurveda means the knowledge of life. It is a sister science of yoga and it reflects an age-old fundamental drive: the maintenance of good health and the desire for longevity. The goal of Ayurveda has always been to keep people healthy, while they pursue their more important spiritual goals.
According to Ayurveda, life is considered the union of body, senses, mind, and soul. The living human being is an accumulation of three humours, Vata, Pitta & Kapha, seven basic tissues, Rasa, Rakta, Mansa, Meda, Asthi, Majja & Shukra and the waste products of the body such as faeces, urine and sweat. Thus, the total body matrix comprises of the humours, the tissues, and the waste products of the body. The growth and decay of this body matrix and its constituents revolve around food, which is processed into humours, tissues, and wastes. Ingestion, digestion, absorption, assimilation, and metabolism of food have interplay in health and disease, which are significantly affected by psychological mechanisms as well as by bio- fire, Agni.