Plasma volume expands roughly 10 to 15% over 10 to 14 days of consistent heat exposure. That is more available blood for working muscles, more sweat available for cooling, and a meaningfully lower core temperature at the same race pace. Showing up to a hot race without that adaptation is a self-imposed handicap.
Enter your race date and current training environment. We generate a day-by-day protocol with progressive heat exposure, race-day pre-cooling, and the per-session fluid and sodium targets your sweat profile actually needs.
Heat Acclimation
Planner
10 to 14 day heat-prep protocol with per-session fluid, sodium, and core-temperature targets. Generated for your race date, current training environment, and sweat profile.
Not Medical Or Nutrition Advice
This calculator and the resulting plan are educational only. Endurance sports carry inherent risks and individual nutrition needs vary. Athletes should consult a qualified healthcare professional or a registered sports dietitian before applying any nutrition, hydration, or supplementation strategy, especially if you have a medical condition, are pregnant, take medications, or are training through injury. Use this information at your own risk.
Sodium Handles Fluid Retention.
Nitrate Handles Oxygen Efficiency.
These are different physiological systems and both matter on race day. Build your sodium strategy with this calculator, then stack Beetroot Pro for the oxygen efficiency layer. The two are additive.