Sweat It Out! Skin Patch Aims To Test Sweat For Health, Northwestern University Study

Published: Nov 28, 2016

Breaking a sweat? Researchers are creating a skin patch that can test those droplets while people exercise and beam results to their smartphones, possibly a new way to track health and fitness.

The experimental gadget goes well beyond activity monitors like the Fitbit. A little larger than a quarter, it’s almost like a tiny lab stuck to the skin — and a study published Wednesday found it worked on sweaty bicyclists, sticking even during a long-distance race in Arizona.

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