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Nutrition

Electrolyte Hyperhydration Hyponatremia Guard

Electrolyte hyperhydration hyponatremia guard avoids chugging plain water beyond thirst in long cool events—diluting blood sodium causes confusion and nausea worse than dehydration in some marathons.

Electrolyte hyperhydration hyponatremia guard avoids chugging plain water beyond thirst in long cool events—diluting blood sodium causes confusion and nausea worse than dehydration in some marathons. Drink to thirst plus planned sodium on hot long efforts; not maximal water always.

Know race aid station plan. Weigh post-race: modest loss is normal.

Common questions

  • Can too much water cause hyponatremia?

    Yes—excess plain water without sodium during long events dilutes blood sodium. Drink to thirst with electrolytes on long hot efforts.

Related guide

Electrolytes for Heat Training: Sodium, Potassium, Magnesium, and When to Supplement →

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