Yoga means Transformation. Transformation means change. When I attempt to change I realise that change is the changeless law of nature. Changes are always taking place all levels natural level , physical level, level of weather. The difference is Any change that is intelligent and deliberate is transformation. Certain changes like growing old, no special effort is needed. It happens on its own but to grow old gracefully, I need great deal of thinking and acting, for me yoga helped lot to towards my transformation.