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(Photo by Tim Nwachukwu/Getty Images)

Gatorade has developed a new patch that affixes to an athlete’s skin to collect physiological data on their sweat output while they train. The app will recommend how a user can improve their nutrition and hydration based on the makeup of their sweat and workout routine. So basically, the patch tells you how much fluid and sodium you’ve lost and how many of their sports drinks you need to consume to replenish your body. Two patches cost $25.

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