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Can sweat power your smartphone?

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Published on Aug 12, 2014

Researchers in California have developed a device that can monitor your workout progress and generate power from your perspiration.

Dr. Joseph Wang and his team at UC San Diego showed off their invention at the national meeting of the American Chemical Society in San Francisco.

It works by measuring a chemical called lactate that is naturally present in sweat. The more intense the workout, the more lactate your body produces.

The sensor also strips electrons from lactate to generate a small electrical current. Wang hopes the device can eventually power a smart watch or heart rate monitor.

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