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Published online 2 March 2007 | Nature | doi:10.1038/news070226-16
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Turning sweat into light
Could 'gym generators' power the way to green electricity?
Do you spend your free time sweating away in the gym? Ever wonder whether all that energy might be put to better use? Well fear not, because you might soon find yourself converting those calories to light, and helping the club out with its electricity bill.
The California Fitness club in Hong Kong is among the first to jump on the green energy treadmill — stairmaster and cross-training machines at the gym have been wired up to the building's lighting system.
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