Ayurveda, the oldest health science has eight branches. Rasayana (rejuvenation) is one of them. Rasa has different meanings like juice, "taste, essence," "flavor, or emotion", but is not limited to any of these in itself. In therapeutic process Rasa is concerned with the conservation, transformation, and revitalization of energy. Rasa nourishes our body, boosts immunity and helps to keep the body and mind in best of health.