Drinking plenty of fluids is the cornerstone of staying hydrated. Water is essential, but if you’re active or sweating heavily, consider electrolyte drinks to replenish lost minerals like sodium, potassium, and magnesium. Carrying a reusable water bottle can help you drink more throughout the day, especially if it’s insulated to keep your water cold. Watch for signs of dehydration, such as dark urine, fatigue, or dizziness, and act quickly to rehydrate.