Currently, body maintenance takes place primarily in gymnasiums and fitness centers. For a fee, you get to pump iron, ride bicycles and row boats.
Total emphasis is upon self enhancement.
When the crank is turned, the light bulb goes on. The harder one cranks, the brighter the light gets. This is a very simple way to generate electricity, and I have always been fascinated by the memory of the glowing light bulb in my 7th grade class. Imagine this scenario. You get on the exercycle, punch your code into the computer and start pedaling.