INTRODUCTION 1.1 INTRODUCTION A person who has balance in enjoyments, movements, interactions, physical activities and sleep, gains mental composure by which he can overcome his mental disturbances. The word balance is used to mean only need based. If all that man does is done according to needs, he enjoys doing them and he does them without carrying out to extremities then he is said to lead a life of yoga. This balance in life is a part of Meditation. Yoga is primarily a philosophical science during mans search for the meaning of existence. In ancient times when people lived the yogic way, good health was a sequel to their daily life style. But in recent times, due to mans changing values and life style, health deteriorated and yoga gained ground in its use as therapy Ill health and management of disease in today's world are not just due to physical reasons, but due to decay in moral standards .Hence, curative methods should not be confined to material plane alone. Yoga is a form of medicine. It can prevent and cure many ailments. This fact has been accepted. It is therefore necessary to give it the status of primary form rather than alternate system. This is the only system of medicine that has stood the test of time without any modification. Modern medicine undergoes so much of change whether in the form of terminology or newer drugs to tackle old diseases. Unlike modern medicine yoga has never changed its theories, terminologies in relation to health and disease since ancient times,