The calculation is a general estimate based on type of training, duration, body weight, intensity, temperature, and weather conditions. Fluid and sodium loss are shown as ranges because sweat rate and sodium concentration in sweat vary greatly between individuals. The recommended intake per hour is intentionally lower than the total loss, for safety reasons — but the number of sachets is always based on the entire estimated sodium loss for the session length, not the more conservative hourly intake, so that the need is not underestimated. Each ELECT portion sachet contains 1,000 mg of sodium. Consider the result as a guideline, not an exact or medical recommendation.

The calculation is based on your measured sweat volume and a chosen sodium profile (low/average/high salt content), which is a simplification of the actual sodium concentration in your sweat. The 70–100% replacement range is a more conservative recovery recommendation, but the number of sachets is always based on the entire measured sodium loss — not just the replacement amount — so that the need is not underestimated. Each ELECT portion sachet contains 1,000 mg of sodium. Consider the result as a guideline, not an exact or medical recommendation. You can find your sweat loss in e.g. Garmin Connect or the Coros profile, or estimate it by weighing yourself before and after training.