Submissions that have been rejected by the Creativity Pool. - The Docks aren't necessarily the final destination, if a broken idea gets fixed it may travel to a more appropriate category.
#21102
There are lots of kinds of weight lifting contraptions or exercise contraptions. My idea is to design these machines in a way that it can convert the push and pull energy generated by the weight lifter to electricity and store it in a battery, so that it can be used in other means. Imagine if these becomes reality, with the hundreds or thousands of work out or weight lifting establishment all over the world. This could contribute to save energy and lessen burning of fossil fuels
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