Want To Know What's In Your Sweat? There's A Patch For That
"If you wanted to measure your heart rate or step count during exercise, you would
use a fitness tracker. But what if you wanted a device to tell you when when you need to drink more water or should reach for a sports drink?"
"Scientists from the University of California, Berkeley, designed a patch that can measure sodium in sweat and determine sweat rate directly from the skin. Their findings about the effectiveness of their invention were published Friday in the journal Science Advances."
"Sweat is easy to stimulate and has a rich chemical composition, which makes it an ideal body fluid to measure health and athletic performance, explains Mallika Bariya, an engineer at the University of California at Berkeley and one of the authors of the study."
"Their findings suggest that knowing your sweat rate and sweat composition could help you customize your post-workout beverage or help you decide how much of it you need to drink to rehydrate and replenish your body. 'That's a clear application in the very near term,' says John Rogers, professor of materials science and engineering at Northwestern University, who is developing his own sweat patch with the sports drink company Gatorade. Rogers wasn't involved in the study."