Often associated with Hinduism, yoga actually is older. It is the oldest physical discipline in existence. The exact origins of yoga are unknown, but it is thought to be at least five thousand years old. The earliest evidence of yoga practice can be traced back to about 3000 B.C. The original purpose of the postures and breathing exercises was to bring stability and relaxation so practitioners could prepare for the rigors of meditation, sitting still and alert for long periods of time.
The word yoga has its roots in the Sanskrit language and means to merge, join or unite. Yoga is a form of exercise based on the belief that the body and breath are intimately connected with the mind. By controlling the breath and holding the body in steady poses, or asanas, yoga creates harmony. Yoga is a means of balancing and harmonizing the body, mind and emotions and is a tool that allows us to withdraw from the chaos of the world and find a quiet space within. To achieve this, yoga uses movement, breath, posture, relaxation and meditation in order to establish a healthy, vibrant and balanced approach to living.
Modern scholars have defined yoga as the classical Indian science that concerns itself with the search for the soul and the union between the individual, whose existence is finite, and the Divine, which is infinite.
Yoga is one of the original concepts which today would be labeled as holistic. That means that the body is related to the breath; both are related to the brain; in turn this links with the mind, which is a part of consciousness.