evolution of our awareness?

Have you ever thought about the fact that you practice yoga for much subtler reasons than you are aware of? One of the golas of yoga is an evolution of awareness through your central nervous system, and its accompanying cerebro-spinal system. Most of our life is spent in an awareness near the base of our spine in the more primitive, if you will, parts of ourselves. These parts are more related to the lower portions, the primitive portions of our brain. In a sense, hatha yoga (postures) are a primary means to help us move through and beyond these portions of ourselves. Meditation is a key factor in helping us stimulate the higher regions of our brain, the neo-cortex, and offers us a platform to go beyond the brain/mind. What do you think?