"Most people, including doctors, have never seen a natural foot, unaltered by footwear. The following images of habitually bare feet are taken from a study performed almost 100 years ago, published 1905 in the American Journal of Orthopedic Surgery, which examined the feet of native barefoot populations in the Philippines and Central Africa. A line can be drawn that runs through the heel, ball, and big toe of a habitually bare foot. The little toes spread naturally and fan out to provide a wide, stable base for walking or standing
How do our shod feet compare? The following more common image, also taken from the 1905 study, demonstrates feet that are shaped like the owner’s shoes. No such line can be drawn, and the little toes crowd to a point—a comparatively unstable, narrow base for walking or standing."
Did you know that the human foot has an approximate 7,800 nerves and almost 200,000 sensors? When our foot (barefoot) makes contact with the ground these sensors are activated, which then sends signals to the three most injury prone areas of the legs: the ankles, knees and hips. Also, when we walk barefoot we force the muscles in our feet to actually develop. Have you ever noticed the shape at the top of a sneaker? Now compare that with the shape of our feet near our toes. The sneaker comes to a narrow cone, but our feet are naturally wide at the top. What this does is it crowds our toes and doesn't allow up to use the balls of our feet nor or toes to propel us. Instead we rely on the upward curve at the tip of the sneaker to "rock us" into our next step (notice the curve towards the toes - kind of looks like a rocking chair doesn't it?).