This idea targets two problems: energy conservation & costs and obesity. Have a recumbent bike that the employee pedals during the day. Pedaling is connected to a generator and the expended energy powers the user's computers, peripherals, cell phone, etc. Store excess energy in a battery.
Problem solved: Employers reduce energy consumption, thereby reducing energy costs while employees lose weight and get in shape. Excess energy is stored for future use in a battery. Battery owners could sell their batteries of stored energy.
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