For thousands of years the soles of human feet were always in touch with the natural surfaces of the earth such as sand, mud, and rock. Walking on these surfaces stimulated nerve endings, balancing and strengthening the body. Today, shoes and unnaturally rigid surfaces prevent this natural stimulation. When worn daily, Kenkoh sandals offer a stimulating massage that can improve circulation, provide relief from stress, and revitalize and improve mobility of the feet, ankles, legs and back.