Hydration guidelines recommend that adults drink about 2 to 3 liters of water daily, depending on factors like activity level, climate, and individual health. This amount can include water from beverages and food, as many fruits and vegetables contain high water content. It's important to listen to your body; thirst is a natural signal that you need more fluids. Additionally, during intense exercise or hot weather, you may need to increase your intake to prevent dehydration. Always consider your specific needs and consult a healthcare professional if unsure about your hydration requirements.