Yoga means union, or to yoke or join. This means that everything is just one energy, or that god is omnipresent and omnipotent. However, everything that we know of life comes to us from our limited senses. Therefore, due to this limitation, we feel limited or separate from 'the one'.  From this union or totality of spirit.  Yoga includes more than hatha yoga and yoga postures. It also includes meditation, karma yoga (or right action), and many other facets of a balanced spiritual yoga practice.