Chapped lips, low energy and that constant winter blah got you down? You might be more dehydrated than you think. Between freezing temps outside and the dry air, your body can lose hydration - and the effects add up fast. That's where Nuun Sport Electrolyte Tablets come in. These drop-in tablets make it easy to support hydration by replacing electrolytes lost during winter activities like workouts, travel and even just long, layered-up days.