4min chapter

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Sodium Supplementation for Ultrarunning with Alan McCubbin PhD | Koopcast Episode 159

KoopCast

CHAPTER

Is It Necessary to Replace 80% of Your Fluid Losses?

Exercise duration, sweat rate and fluid intake are all important. If exercise is less than four hours, you're very unlikely to cross that sort of four, five litre, cumulatively sweat loss mark. That's when replacing sodium seems to be necessary for the average person. But if it's over four hours, then I tend to look at the hourly sweat rate. And again, using 1,800 nls an hour is probably a good rule of thumb. For ultra running, well, are more or less reasons to replace 70% of your losses?

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