Here is a nifty gadget that allows athletes to keep a close eye on fluid and electrolyte losses as they exercise. The Nix Hydration Biosensor comes with a pod that transmits data to smartphones and a patch that collects sweat. Nix works with iOS devices and Garmin sports watches. It is also compatible with Apple Watch.
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The pod weighs less than 0.5 ounces. It lasts up to 36 hours on battery. The Nix app shows real-time hydration notifications and post-workout hydration summaries. As you starts moving your body, Nix measures sweat rate, electrolyte loss rate, and sweat composition.
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