← All episodes Episode 136 · Neuro-Nutrition & Brain Fuel

Sweat Changes the Signal

Sodium, Electrolytes & Hydration

Hydration is not only water; your nerves also depend on electrolytes moving correctly.

The Science

  • Sodium helps cells fire signals, hold fluid balance, and respond during hard effort.
  • Heavy sweating loses water and salt at the same time.
  • Needs vary by body, heat, training, diet, and blood pressure, so context matters.

The Protocol

  • For long hot practice, plan water plus electrolytes, food, and smart breaks.
  • Do not overload salt or copy someone else's bottle.
  • Stop and get support if you feel dizzy, confused, or unusually weak.

One-page summary

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The science beat (5-sec loop)

Sources

  • Huberman, A. Using Salt to Optimize Mental & Physical Performance. Huberman Lab Essentials, March 26, 2026.

Educational content only. Not medical advice.

Also on Instagram: @neurosensebrain

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