. "For bipedal man the feet tread the dust of the earth, and throughout history walking on terra firma has involved migration and transformation - being on the move. In Native American cultures of the Southwest, tribal people would run for miles from one community to the next. In India and Tibet, pilgrimages to sacred geographic sites involve trekking for mikes. In biblical lore, passage through the desert suggested an exodus, a migration away from the confines of both authoritarian power and a limited psyche. In the structure of the body, the plantar surface of the foot connects to the ground and thus is the genesis for evolution. .
A disciplined journey through the labyrinthine channels of the subtle body - through the bone, tissue, cells and hormonal secretions - necessarily begins with the feet. In light of the itinerant, fast-paced, and highly mobile society we live in today, establishing a sense of ground through the feet is valuable. Generating stability and support through the bones and connective tissues of the feet can help regulate the nervous system, increase circulation, and improve respiration. The earthward rooting of the foundation of the body can help bring composure in the face of difficulty, whether it is a fragmented family, a health crisis, a failing marriage, or a precarious economy. To this end, standing poses in yoga help build endurance, steadiness, and resolve."
From "Yoga of the Subtle Body" by Tias Little, a book I highly recommend to anyone interested in learning how the metaphorical language of yoga philosophy applies to the anatomy of the physical body.