Here is another gadget that allows athletes to analyze their sweet and stay hydrated accordingly. The Gx Sweat Patch combines with your phone to show sweat rate, fluid loss, and sodium loss. After each workout, your data is recorded as a sweat profile. If you do that workout again in similar conditions, you won’t need to wear another patch.
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This patch uses non-toxic food dyes for measurement. It has a hypoallergenic design. You can find out more here.
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