Hydration for Zone 2 Training: Why the $38B Sports Drink Market Misses the Endurance Economy
Last updated: 30/12/2025 terça-feira Elite endurance athletes spend 90% of training below 80% of maximum heart rate or a pace where “most elite athletes spend 90% of their training in low [heart rate] zones” (InsideTracker). Yet the $38.42 billion global sports drink market (Grand View Research) remains dominated by high-sugar formulations designed for explosive efforts and…