September 27, 2026 · 11 MIN
Practical Hydration Monitoring: Urine, Body Weight, and Biomarker Tracking
No single hydration biomarker tells the full story. Learn how to combine urine specific gravity (target below 1.020), morning body weight trends, and wearable sweat analysis to build a reliable multi-marker hydration monitoring system, including ultra-running-specific challenges where weight gain can mask cellular dehydration.
