Yoga is a science to attain complete liberation from our suffering through physical, mental, social & spiritual well-being. In the perfect state of one is not affected by the conflicts of day-to-day life. A true yogi is fully manifested with the powers of consciousness. It comes from India and goes back over five thousand of years. The Indian sage Patanjali, in his Yoga sutra defines yoga as the control of the activities of the mind.  Its Yoga methods include ethical disciplines, physical postures, breath control, as well as meditation, good health, attractive looks & stress free mind etc. Even to achieve this, yoga needs to be understood properly, otherwise wrong ideas or incorrect methods may harm instead of benefiting. Therefore it is very essential to comprehend the phenomena & mechanisms of yoga practices.