Yoga, an ancient but perfect science, deals with the evolution of humanity. This evolution includes all aspects of one's being, from bodily health to self realization. Yoga means union - the union of body with consciousness and consciousness with the soul. Yoga cultivates the ways of maintaining a balanced attitude in day to day life and endows skill in the performance of one's actions.
 
Then you inhale, you are taking the strength from God. When you exhale, it represents the service you are giving to the world
 
Yoga is a light, which once lit, will never dim. The better your practice, the brighter the flame.