Nuun All-Day Hydration Tablets


“I drink more than a gallon of water in a day of climbing, feel thirsty the whole session, and can tell my body isn’t absorbing the fluids,” our chief tester complained. So we gave her Nuun All Day Hydration tablets ($29.95 for a 4-pack;, and she noticed a difference right away: “Drop a tablet in 16 ounces of water, and my thirst actually feels quenched.” With vitamins A, B, C, D, and E, electroylytes, and other nutrients, these little tablets actually help you absorb the water you drink without the sugar, which can cause a crash, and caffeine, which can contribute to dehydration and muscle cramping. The bonus of the All Day variety is that they’re about seven calories per tab, so you can consume freely without worrying about downing a lot of empty calories. Plus, the tablets give water a delicious taste—we recommend the grape raspberry and the tangerine lime—so getting your daily dose of hydration is easy.