Wow! Your husband must have amazing stamina. Like you, I worked in retail, which involved a lot of walking back and forth between the dressing rooms and 'the floor.' And like you, I couldn't wait to kick off my work shoes when I got home to relax. Now, I work several hours a day at a computer and sometimes get a little stiff behind my knees from sitting so much. Nothing makes me feel older. One solution I've found is to go to another part of the building where I work with my cell phone to make phone calls. This way, I can pace a bit, stretch and stand up. A great break from sitting all day. But it's not so much standing that it takes me back to my college days of working in retail.