The recommended daily intake of water for the average adult is about 2 to 3 liters, or approximately 8 to 12 cups, depending on factors like age, sex, and activity level. Adequate hydration is crucial for maintaining bodily functions, including temperature regulation, digestion, and nutrient transport. Note that individual needs may vary based on exercise intensity and environmental conditions. As hydration is vital for overall health, individuals should pay attention to signs of dehydration, such as thirst and dark urine. Drinking sufficient water supports physical performance and cognitive function while also promoting a healthy metabolism.