Electrolyte Balance: More Than Just Sodium

Most endurance athletes think electrolytes equal sodium. Sodium is central, but it is only one part of a broader hydration equation that changes with duration, heat, and sweat rate.

Potassium supports muscle and nerve function, magnesium contributes to energy metabolism, and calcium plays a role in contraction signaling. Neglecting the full picture can lead to late-race fatigue and cramping even with adequate carbs.

"Hydration is not just fluid volume. It is fluid plus the right mineral balance."

— Prep Coaching Team

Build your electrolyte strategy

• Start with sodium targets based on sweat testing and race conditions.
• Use products that include complementary minerals, not sodium alone.
• Pair intake timing with aid station spacing to avoid long gaps.
• Rehearse full hydration plans in long sessions, not just race day.

Prep maps your products to a race-ready hydration timeline so your fluid and electrolyte plan scales with effort and weather.