GX SWEAT PATCH

Personalized hydration is now available to all athletes.
GX Sweat Patch

Understand your sweat loss

The Gx Sweat Patch helps you understand your sweat rate and the amount of sodium in your sweat so Gx can give you better, more personalized hydration recommendations.

Sweat made simple

The Gx Sweat Patch is a single-use patch that’s worn by an athlete during a workout. After taking an image of the patch on their phone, the Gx app shows a range of results, helping an athlete understand where they’re at in terms of sweat loss, sweat rate, and sodium concentration.

Sweat Patch results are used to create a range of sweat profiles for athletes, which can vary based on activity. These profiles allow Gx to provide personalized hydration and electrolyte recommendations for performance and recovery.

How it works
FAQ
Sweat Patch and App
Sweat made simple

The Gx Sweat Patch is a single-use patch that’s worn by an athlete during a workout. After taking an image of the patch on their phone, the Gx app shows a range of results, helping an athlete understand where they’re at in terms of sweat loss, sweat rate, and sodium concentration.

Sweat Patch results are used to create a range of sweat profiles for athletes, which can vary based on activity. These profiles allow Gx to provide personalized hydration and electrolyte recommendations for performance and recovery.

How it works

01

Place the patch on your inner left forearm before an intense workout

Firmly apply the Sweat Patch to the middle of your inner left forearm with the Gx logo facing you. Before applying, clean and sanitize your skin. (Tip: Use an alcohol swab or cotton ball.) Let your skin air-dry for 30 seconds before you apply the patch.

The Sweat Patch is best for running, cycling, basketball, football, soccer, lacrosse, tennis, and HIIT workouts. And it’s designed for high intensity workouts lasting 45 minutes and longer.

02

Scan with the Gx app to get your sweat profile

Immediately after your workout, scan the Sweat Patch using the Gx app to get your personal sweat profile.

This profile shows you approximately where you’re at for total sweat loss, sweat rate, and sodium concentration in your sweat based on workout conditions.

03

Generate your plan

The Gx app then combines your sweat profile with your physiology information (age, weight, etc.) and data from your workout, to give you personalized hydration and nutrition recommendations to help you perform at your best.

Sweat Patch Powered By
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FAQ

A sweat test is an exercise during which the Gx Sweat Patch is used to measure an athletes sweat rate and sodium rate of loss. Your sweat rate is a measure of how much sweat you lose during a specific workout under specific conditions, like type, intensity and environment of the workout. Your sodium rate of loss is how much sodium you lose in your sweat. Previously only available to professional athletes, the sweat test will now be available for all athletes to perform themselves using the Sweat Patch.

Athletes perform at their best when their bodies are optimally fueled for performance. How much fluid you drink, or sodium you lose during a workout can make a big difference in how you feel.

Because everyone sweats differently, we all need different amounts of fluid and electrolytes to be properly fueled and perform at our best. By completing a sweat test to learn how much you sweat and how much sodium you lose while sweating, you can personalize your hydration strategy to match your individual needs.

It’s important to note that, while we all sweat differently, no one sweat rate is in any way better or worse than any other. Whether you sweat a lot or a little, there is no way to ‘improve’ your sweat rate or sodium rate of loss.

When worn on your left forearm during a workout, the Sweat Patch will collect the sweat and route it through two channels that use non-toxic colored dyes to visually bring your results to life. Once you’re done working out, you can scan the patch using the Gx app. Gatorade has developed a proprietary algorithm which calculates your individual sweat rate and sodium rate of loss based on the color and volume of sweat which has filled the patch. In order to get a result, the patch will need to have filled partially, but may not fill entirely.

The Sweat Patch should be applied to the middle of your inside left forearm. It should not be applied anywhere else. It is also best to have your skin be as clean and dry as possible when applying the patch or else it may fall off. We recommend you use an alcohol swab to clean and sanitize your skin, letting it air-dry for 30 seconds before you apply the patch. When you do apply the patch, make sure the Gx logo is facing you. After you’ve placed the patch on your arm, use your right hand to firmly press down on it for ten seconds to ensure the patch is properly adhered.

Don’t try and put it back on. If the patch falls off, apply another patch and try the test again. The patch falling off could be caused by insufficient cleansing of the arm before adhesion, not enough force applied when placing the patch on the arm, or direct contact with another athlete.

If you can’t see either channel filling (orange or purple), you most likely need to work out longer, or at a higher intensity. If you’ve been exercising for over 90 minutes and still haven’t filled the patch, you most likely have a very low sweat rate. You will not be able to get a result from a patch which hasn’t filled at all—at least some orange color must be present. If you think you might be a lighter sweater, be sure to plan your sweat test for a longer, higher intensity workout.

The patch does not need to fill entirely in order to get a result. Some color will need to be present.                                        

The patch and the algorithms developed by the Gatorade Sports Science Institute are designed to be worn on one specific location— the inner left forearm. The algorithm that determines your sweat rate depends on a local to whole body ratio, which is unique to the forearm. If you put the patch anywhere but the middle of the inside of your left arm, or if you wore it with the logo facing away from you, your results will not be valid. Even if you filled the patch, your test results will not be correct or scientifically valid.

You may receive an error for various reasons. The most likely is that your Sweat Patch did not capture enough sweat during your workout to register a result. If that is the case, plan your sweat test for a longer, higher intensity workout.

Another reason may be that the lighting conditions are poor when you scan the Sweat Patch. Move to an area with bright light (preferably natural light) when scanning the Sweat Patch with the Gx app. Try to ensure that there are no shadows over the patch when you scan it

Lastly, the Sweat Patch and our algorithms were developed for running, cycling, basketball, football, soccer, lacrosse, tennis, and HIIT workouts with a duration between 30-90 minutes in weather conditions from 60°F to 100°F. Conditions outside of this may not produce a valid sweat result, or may produce a result with a larger margin of error.

Not yet. In order for you to scan the Sweat Patch, the phone’s camera must be used. Apple’s watchOS does not yet have the capability of capturing an image with the watch.

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