Personally, I think it's a good idea but not realistic. First, it is dangerous. If it is not good, it will bring a lot of trouble to the exerciser. Second, there is a certain difficulty in cost. Who uses such a small generator now? It may be necessary to invest in the development of suitable generators. Even the structural design of the installation must be changed, because it is huge and cannot be popularized, and it must be adapted to the structure of the machine, otherwise it will be a safety hazard. Third, it really does, because it is used in small batches and cannot meet the needs of a large number of exercisers. The purchase cost is definitely high, and the electricity generated is not enough for maintenance. Or it is convenient and cheap to use electricity directly. Besides, I can see that you are a very special person with a lot of brains.