Idea Description
Utilize the wasted energy that could be created during work outs in a gym. Bicycles, stair masters, ect. Think of the flashlights powered with the coil that stores the energy created as you shake it. Think of storing all the workout energy in the same fashion. You could even have the cards similar to the ones used to track gamblers that patrons of the gym insert into the machines to receive a credit towards monthly dues or even money back should their workout provide a payout greater to the monthly fee.
What will you do if you win $10,000 for this idea?
Market Ideas.
Vote for it now.
Big box gyms are always looking for ideas to differentiate themselves. You can sell to them.