I just took a 'sweat test' from a hydration expert — here's what I learned

I've spent the last couple of days on a fitness retreat with budget behemoth Amazfit, whose Whoop-dupe Helio Strap I love. But I've been at this fitness retreat for a different reason — testing the brand-new Active 3 Premium (full review incoming!).

After completing 5ks, challenging hikes, relaxing yoga sessions and strength training, I've been learning so much about my body and my fitness level.

But one thing I didn't expect to learn about? My sweat. Yes, my sweat. At the retreat, I had my sweat tested by an expert from Precision Hydration, and I had no idea sweat could be so interesting.

I learned that I sweat very little, but what I do sweat is very high in sodium — over 1,100mg per liter. The average sweat contains between 500-1000mg of sodium per liter, so this means I am a higher-sodium sweater than most. But what does a "sweat test" actually entail, and what are the tangible findings from said test?

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The 1500 is the highest-concentration drink offered by Precision Hydration, which provides 1500mg of sodium per liter (when mixed into water), ideal for people who sweat a lot or sweat out a lot of sodium. You can also get 500mg or 1000mg.

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Set the scene: The sweat test

So, the sweat test isn't a horrible experiment where you have to run on a treadmill until you're dripping with perspiration and red in the face. It's like a blood test, sans needles.

I only had to offer up my arm: Precision Hydration took care of the rest. They put two electrodes on my forearm and sent a small electric current through my skin to kick my sweat glands into action. Then, after about 10 minutes, the electrodes were swapped for a sweat-extracting sticker. As I sweat like the human equivalent of the Sahara, this part took about thirty minutes.

Once I'd sweated enough, the sticker was removed and my sweat analyzed. You heard it here first, folks, I'm a high-sodium sweater. I'm so high in salt that instant ramen and chips should be afraid of me.

So what do I need to do now?

As I sweat out a lot of salt, I need to adequately fuel myself during workouts. This means I should be consuming electrolytes and salt drinks as I run, hike, practice yoga and everything in between. I was wondering why I get so many glute cramps while running — my high-sodium sweat could be the reason (or I could just have weak muscles...).

If you get a lot of cramps when you run, you might also be a high-sodium sweater. Cramping isn't definitely caused by low salt — the few studies in this area have been mostly inconclusive — but it's still a worthy theory.

If your post-workout skin tastes a little salty, you might also be a high-sodium sweater. The American College of Emergency Physicians' Sports Med department advises that you might feel tired or nauseous post-exercise if your sodium levels are low. In this case, it's best to stop reading this article and talk to a medical professional!

While learning about sweat is fun, it can't replace true medical care — please consult your doctor if you're concerned. I undertook this sweat test for curiosity's sake — it could be worth finding one in your local area if you're curious too!

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