The word Yoga comes from Indian philosophy, it literally means union, and in this context refers to the union of the individual's soul with the universal.
Yoga is an ancient philosophy of life as well as a system of exercises that encourages the union of mind, body, and spirit. In the words of Patanjali, author of the Yoga Sutras, "yoga is the ability to focus the mind on a single point without distraction." Yoga is a physical discipline; it uses the body and breathing to develop self-awareness and mental clarity.

Yoga is a way of life, an art of righteous living or an integrated system for the benefit of the body, mind and inner spirit. This art originated, was perfected and practiced in India thousands of years ago. The references to yoga are available in 'Upanishads' and 'Puranas' composed by Indian Aryans in the later Vedic and post- Vedic period. The main credit for systematizing yoga goes to Patanjali who wrote 'Yoga Sutra', two thousand Years ago. He described the principles of the full eight fold yogic discipline. He composed the treatise in brief code words known as 'Sutras'. 'Yoga Sutra' is the most important basic text on Yoga. It is through this basic treatise that the essential message of yoga spread throughout the world.

Yoga is the attainment of the physical, mental and spiritual health. Patanjali has recommended eight stages of Yoga discipline. They are:-

Best of all, Yoga is highly therapeutic. Some of the ailments proven to be relieved, reversed and even healed through the practice of Yoga are acidity , allergies, alzheimer disease, anemia, anger, anxiety, arthritis, asthma, back pain, bronchitis, cancer, carpal tunnel syndrome, chronic fatigue, colitis, common cold, constipation, depression, diabetes, epilepsy, eye problems, facial wrinkles, gastro-intestinal disorders, headaches, heartburn, hemorrhoids, hepatitis, high blood pressure, hypertension, immune-deficiency, impotence, menopause, menstrual cramps, migraines, multiple sclerosis, muscular dystrophy, nervous tension, obesity, osteoporosis, prostate, enlargement, sciatica, skin problems, sleep apnea, slipped disk, sterility, stiffness, stress, insomnia, intoxication, thyroid problems, kidney stones, stuttering and stammering, urinary tract disorders for women, vaginal infections