Whether you’re at the office, reading the newspaper at home, or, yes, even watching TV, why not find a way to stand while doing it? In fact, most of this book was written while I was walking fifteen miles a day on a treadmill underneath my standing desk. Prebuilt treadmill desks are expensive, but thrift stores are often awash with old exercise equipment. My treadmill “desk” is just a treadmill stuck under some cheap plastic shelving.