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A sports drink formulated in 1965 for the University of Florida Gators football team and currently produced by PepsiCo. Scientists at the University of Florida determined that a beverage with electrolytes like sodium and potassium would optimally hydrate athletes during long bouts of exercise; they added sugars to replace calories. Gatorade’s popularity took off, forever changing the way we think about exercise hydration—and tripling the size of convenience-store beverage cases. More recent sports-drink brands have targeted endurance athletes with low-carb alternatives.