All nerves end in the feet. For this reason all duopeds, including humans, need to spend a minimum of one hour per day wearing no footwear, with their legs propped up at such an angle as to assure that the subped, or the bottom of the foot, is not in contact with any surface. This is necessary to contradict the effect of wearing shoes. When we wear shoes of any type, and particularly shoes that lace across the top, we are compressing every one of our nerve endings. Often the effects of this compression can be felt in various parts of the body.
Many headaches are a direct result of compressing nerve endings in the subfoot.
The doctor-approved remedy should be clear to all. One must spend a minimum of an hour per day without footwear, being certain that the entire foot is free of any contact or stimulation, so that the nerve endings in the subfoot can return to their natural position and condition.