Yog has the potential to rejuvenate body-mind complex and re-establish the healthy condition of the practitioner. Through scientific research it has been found that yog is helpful in controlling several kinds of diseases, such as, hypertension, insomnia, hyperacidity, diabetes, asthma etc. Yog is also extremely effective in increasing flexibility, since it acts upon the various joints of the body including those joints that are never really on the `radar screen` let alone exercised. It also increases lubrication of the joints, ligaments and tendons. There are different yogaasan's for different systems in the human body as well as diseases. Although the yogic and the modern concepts of the human anatomy differ but the effect of the yogic therapy on its various systems is undeniable.