Below, we're linking a great article from our partners at Precision Fuel & Hydration offers an overview on sweat rate and how to measure and calculate it for your own hydration needs.
To truly dial in your hydration strategy, we highly recommend getting a Sweat Test from a PF&H sweat testing center. The Purple Patch Performance Center in San Francisco offers Sweat Testing as do with many other facilities around the world.
https://www.precisionhydration.com/performance-advice/hydration/how-to-measure-your-sweat-rate/
