Hydration advice for runners has long been based on averages, assumptions, and trial-and-error. But what if you could actually see your sweat and electrolyte losses in real time?

In this episode, I’m so excited to be joined by Meridith Cass, Founder and CEO of Nix Biosensors.

Meridith Cass is the Founder and CEO of Nix Biosensors, a pioneering health tech company that developed the world’s first consumer-ready biosensor for real-time hydration monitoring. Under her leadership, Nix has been recognized by TIME's Best Inventions, Runner’s World Gear of the Year, and the CES Innovation Awards, and is transforming how athletes, military personnel, and everyday consumers manage hydration and performance. Prior to founding Nix, Meridith held leadership roles in healthcare and venture-backed startups, and earned her MBA from Harvard Business School. She is a passionate advocate for personalized health, data-driven recovery, and the future of wearable biosensing.

In this episode, we cover:

• The origin of Nix Biosensors and how a marathon experience led Meridith Cass to rethink hydration and electrolyte guidance

• How the Nix Biosensor works, what it measures, and why real-time sweat data is a game-changer for athletes

• Who sweat testing is most useful for, what athletes can realistically learn from their data, and common mistakes in interpretation

• How to turn sweat and sodium data into a practical hydration plan for training and racing

• The future of hydration science and how wearable biosensing could change the way everyday runners fuel and perform.

  
  

  Looking for the resources mentioned in today's episode?

  ⁠⁠⁠⁠⁠Get your free fueling audit here!⁠

  
  Curious what your sweat data looks like?
  Get 15% off the Nix Biosensors using my exclusive promo code SHNATIUK15.

  Learn more and grab yours at nixbiosensors.com

  If you’re tired of guessing your hydration and electrolyte needs, this is one of the most powerful tools you can add to your training toolbox.