Members of a gym in California aren’t just energizing their bodies, they’re energizing the building.

Eco-Fitness in Sacramento is using innovative green technology to transform spin bikes and treadmills into power producing machines. The converted energy helps power the gym lights and fans.

If you’re wondering how well this could possibly work, you won’t believe how small the gym’s power bill is. News 5’s Jessica Taloney has the answer coming up on News 5 at 5 p.m.