Through inner attunement, the ancient yogis were able to perceive the energetic basis of all matter. The seven chakras or energy centers comprise their model of the energetic or subtle body. Each chakra is located along the spine, starting at the base and running upwards to the crown of the head. These "whirling disks of light" each radiate a specific color and spiritual quality, and are associated with corresponding psychological, physical, and emotional states necessary for the development of the whole person.Though the chakras have not been confirmed by Western science, with the spirit of inquiry, we can explore this model through asana, meditation, and other practices –and ultimately incorporate what we find useful for our own growth and self-understanding.