I used to think hydration was the most boring topic in wellness. Drink water. Add some salt. Move on. But then my team and I spent the first two weeks of July tracking my actual sweat loss during outdoor sessions — weighing in before and after workouts, measuring fluid intake to the ounce, and logging every electrolyte that crossed my lips — and what we found completely rearranged how I approach summer training. Here’s the headline: I was losing nearly two liters of fluid per hour in 95-degree heat. My sodium loss alone was enough to populate a small pretzel…
