A proposal has been circulated in an online think tank to put stationary bicycles, which charge batteries about spacecraft, in space colonies and on space bases. One think tanker critical of this idea says it is a stupid idea and will not work because the human body cannot put out enough energy to make it worth while anyway.
These comments were challenged by the designer of the concept who stated; why waste the energy and you have to exercise anyway to stay in top form and shape. What kinds of person wants to waste energy in space?
The critic and think tank member who poo poo