Lo-Fi Games

I had an idea for a small wooden wheel you could use as a treadmill for generating small amounts of electricity and for building up the athletic skills.
I'm visualizing a small wooden wheel you run on top of with a simple wood railing to hold onto, not a big hamster wheel.
You could even chain prisoners to the wheels to get some work out of them instead of them just setting in a cell.
Would anyone else like to see some kind of Treadmills in the game?

its been suggested but i'd like to see all kinds of 'gym' type equipment for training all kinds of skills primarily to help characters improve while wearing heavy armour so i don't have to make a Job for the mthat requires them to move around alot ^.^

Tread mills would be nice . along with anyother things that might help improve skills without putting yourself in danger :p