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TWO-TIMING Every gym rat knows that water isn’t necessarily the only fluid you want during a workout—a sports drink can help power you through a seemingly endless cardio bout, and a protein shake can boost your muscle recovery after strength training. To the rescue comes the perfect workout companion: The Swigz Dual Hydration System is a double-chamber, dishwasher-safe water bottle that has easy-to-grip nubs and an aerodynamic shape. But more important, the bottle’s independent 12-ounce compartments let you quench two kinds of thirst without carrying two kinds of bottles. Available at goldsgear.com for $14.95.—Liz Plosser