Yoga is a group of physical, mental, and spiritual practices or disciplines which originated in ancient India. Yoga means union of the individual consciousness or soul with the Universal Consciousness or Spirit.
The science of Yoga imbibe itself the complete essence of the Way of Life, including - Gyan Yoga or philosophy, Bhakti Yoga or path of devotional bliss, Karma Yoga or path of blissful action, and Raja Yoga or path of mind control. Raja Yoga is further divided into eight parts. At the heart of the Raja Yoga system, balancing and unifying these various approaches, is the practice of Yoga Asana.