A British gym has become the first in the world to use the energy of its gym-goers to generate its own electricity.
Your workout keeps the lights on, so don't take a break!
Bikes, cross trainers and cardio machines at Cadbury House will each feed around 100 watts per hour back into the building's power supply.
Some of the new equipment will also use 30% less electricity and generate enough energy to power their own information screens.
There are 42 pieces of equipment, called ARTIS. It's all supplied by Technogym, and the cost is about $1 million. This gym equipment is considered the most energy efficient in the world.
The technology works by using a dynamo or holding cell. Once you start to workout, the equipment will power up - generating electricity from the energy they are producing.
As soon as the equipment has generated enough power to operate, any extra energy will be stored inside a holding cell, or dynamo. This extra energy is then fed back into the building's electricity supply.
Smart phones can be used with the equipment too. This way you can log on and track your progress.
1430 East Victory Drive
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