Yoga is a gentle, low impact exercise system that focuses on body posture, breathing, and meditation. Yoga originated as an ancient Indian practice and has become a reputable therapeutic technique in Western Medicine. By adopting very basic and sometimes very complex body postures and breathing techniques, the goal of yoga is to provide the practitioner with a number of physical and mental benefits. Yoga can help relieve back pain by rehabilitating injured back muscles and preventing re-injury through stretching, strengthening and body alignment. Yoga can also increase oxygen to the brain and induce a relaxation response to alleviate muscle tension and stress. Yoga is a very safe form of exercise for most people, but may aggravate symptoms of specific back conditions.