The Big Hydration Episode, with Sports Scientist Andy Blow

We all know know that running hard makes us sweat, especially in hot and humid weather. But how much do you really understand about its impact on your performance?

Sweat and hydration

Our bodies naturally sweat to keep us cool during physical exertion or in hot conditions. It’s actually a really neat process! Sweat is mostly made up of water, and when that evaporates, it cools our bodies down.

Along with water, sweat contains small amounts of electrolytes, which are essential to the body’s function and need to be replaced. That’s why sport drinks contain electrolytes, with sodium being a key ingredient. The exact balance of how much sodium we lose and should replace is very individualized.

Understanding this can help us prepare for long or hot training runs and races, as well as aid with recovery.

I’m excited to dive in to this topic with our expert, Andy Blow.

Andy Blow: CEO of Precision Hydration

Andy Blow

Andy Blow is a Sports Scientist with a degree from the University of Bath, focusing his expertise on sweat, dehydration and cramping. As an elite level triathlete, these topics have been a particular interest to him for a long time.

He’s not just a heavy sweater but he sweats out a lot of sodium, which is a tough combination. In his younger days, Andy finished in the top-10 of Ironman and IM 70.3 races, as well as winning an Xterra World title.

Andy previously worked as the Team Sports Scientist for the Benetton and Renault Formula 1 teams, and remains an adviser to the Porsche Human Performance Centre. He is also the founder and CEO of Precision Hydration, a company focused on – you guessed it – hydration for athletes.

So we know he has a thing or two to share about athletic performance and how hydration ties in!

The Sweaty Details

Today’s conversation is a long overdue episode on hydration. I’m thrilled to have Andy Blow on to share his expertise.

As runners, we’re all familiar with cramping, electrolytes, and hydration – but Andy really breaks these down for us. We talk about:

  • Fluid loss, dehydration, and over-hydration (known as hyponatremia)
  • Electrolytes
  • Environmental factors
  • Determining your sweat rate
  • What to do if you are a salty sweater

      Andy helps us understand how to apply all this in training and in races. And I really appreciate his emphasis on simplifying hydration, depending on the environmental conditions and duration of workouts.

      I hope this topic will be as fun for you to learn about as it was for me.

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        Thank You Naked Nutrition

        Naked Nutrition

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