A gym in County Durham has become the first in the country to produce electricity from its members' workouts.
The leisure centre in Willington has invested in ten new exercise machines, which harness energy as they are used.
It is hoped that the machines could save enough electricity to pay to light the whole leisure centre.
You can watch the full report from Lucy Taylor below.
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Mostly fine and dry with sunny spells for the rest of Saturday. Cloudier, cooler with the risk of rain/drizzle into Sunday
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