Electrolyte needs depend on sweat loss, heat, exercise duration, diet and fluid intake.

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Electrolytes: when water is enough

Last reviewed 3 August 2026. How we write this.

Electrolyte needs depend on sweat loss, heat, exercise duration, diet and fluid intake.

Plain water is adequate for many ordinary sessions. Longer hot exercise or heavy salty sweating can increase sodium needs.

More can also be harmful

Excess plain water can dilute blood sodium, while unnecessary high-sodium products may be unsuitable for some conditions.

Educational content only. This does not diagnose, treat or replace individual advice from an appropriately qualified clinician.

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Educational content only. Not medical advice, diagnosis or treatment. Always consult a qualified healthcare professional before changing your health regimen.