Thanks for tuning into this episode of the Human Performance Outliers podcast with Zach Bitter.

All right, folks, welcome back to another episode of the Human Performance Outliers podcast.

I'm your host, Zach Bitter, and today I have a guest interview for you.

Today's guest is Andy Blow.

So I became familiar with Andy years ago, actually,

as I was exploring some hydration type things that were relative to my racing and training

for that matter. So you have a situation, especially in Ultramarathon, where staying hydrated

or at least reasonably hydrated becomes a big

part of the process or a variable that if you can get right can very much influence performance. So

actually last summer, I've talked about this before in the podcast, I had a friend Rimo

reach out to me an offer to do a sweat test.

And what that basically is is there are these like machines and you get strapped up to it.

It's super non-invasive.

It just draws a little bit of sweat off of you and then analyzes it and it will spit

out a number and that number will reflect the amount of electrolytes

that you lose for every liter of sweat. And with that information, you can start running the numbers.

If you know then how many liters of sweat you lose in X climate, you can start to calculate

what your needs are going to be in a training session or in a race session and also determine like essentially

how long it might take before you start seeing some of the negative ramifications of dehydration.

So the reason I wanted to have Andy on is Andy is actually the guy who made that machine.

He has been just someone who has been in the whole hydration, electrolyte world for quite some time now.

And that is partly, as we'll get into in the podcast, an issue that he was dealing with when he was

...