Is it possible to run a computer with an exercise bike?

       

 The efficiency factor of human muscles generating electricity through a dynamo is about 37%. As a result, it takes 5 hours of cycling to produce 0.5kWh of energy. An average computer and monitor consume energy at a rate of up to 500 W (0.5kW) per hour. At that rate, an hour of operation consumes 0.5kW of energy-just the amount produced by 5 hours of cycling.