Your brain activity, your body chemistry, even your genetic makeup can be changed by practicing yoga.  

Only what you perceive, you know - the rest is all imagination. Yoga is the science of enhancing perception.

What we refer to as Yoga is a technology to make your energies function by choice, not by compulsion or fixed patterns.

Allowing this life to flower into its fullest possibility is what life is about, is what yoga is about, is what spiritual process is about.

Yoga means breaking the cyclical process of life and making it a straight line.