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Run On Fuel
Run On Fuel
About
Book a Sweat Test
FAQs for Sweat Tests
Sweat Rate and Sodium Calculator
Your Bottle
Sweat Test Blog
Apply for Nutrition Coaching
About
Book a Sweat Test
FAQs for Sweat Tests
Sweat Rate and Sodium Calculator
Your Bottle
Sweat Test Blog
Apply for Nutrition Coaching
Kristen Moffatt 3/5/26 Kristen Moffatt 3/5/26

Are You a Salty Sweater? Here's Why It Matters for Your Performance

White residue on your skin and clothes. Persistent cramps despite hydrating well. These are signs you may be a salty sweater — and standard electrolyte advice may not be enough for you.

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Kristen Moffatt 2/19/26 Kristen Moffatt 2/19/26

How Much Sodium Do You Lose in Sweat? The Science Behind Your Salt Loss

Sodium is the electrolyte you lose most when you sweat — and the difference between individuals is enormous. Here's what the science says and why it matters for your training.

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-Kristen Davis, MS, RD, CSSD

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