Standing in non supportive footwear on a hard, flat un-natural surface for any length of time can elicit discomfort in the feet, knees, lower back and even the neck. While many of us have experienced this pain firsthand, we don’t always think about the physiological reasons behind it. In fact, there are a few biomechanical explanations for how the act of standing can cause a chain reaction of pain throughout our bodies. When we stand on flat ground, our feet roll inwards (pronate) to gain ground contact. This act starts a series of postural compensations from our feet all the way up to our necks, as shown in the following image. 
