For a great many of us there comes the inevitable conversation with a physician, “your running days are over. Swim, ride a bike, or walk.” Of the three options, walking is the universal exercise. It requires no special facilities nor any special equipment; basically a comfortable pair of shoes is all that is required. If you are fortunate enough to live near a beach, walking barefoot in the sand is a delight unto itself. Of course, there are also a plethora of high-tech shoes for walking most anywhere. Additionally, for the sartorially inclined, there are designer options for apparel.