Yoga is a scientific system of physical and mental practices that originated in India more than three thousand years ago. Its purpose is to help each one of us achieve our highest potential and to experience enduring health and happiness. With Yoga, we can extend our healthy, productive years far beyond the accepted norm and, at the same time, improve the quality of our lives. Hatha Yoga begins by working with the body on a structural level, helping to align the vertebrae, increase flexibility, and strengthen muscles and connective tissue. At the same time, internal organs are toned and rejuvenated; the epidermal, digestive, lymphatic, cardiovascular, and pulmonary systems are purified of toxins and waste matter; the nervous and endocrine systems are balanced and toned; and brain cells are nourished and stimulated. The end result is increased mental clarity, emotional stability, and a greater sense of overall well-being.