The recommended daily intake of water for most adults is about 2.7 liters (91 ounces) for women and 3.7 liters (125 ounces) for men. This includes all beverages and food sources of hydration. Proper hydration is vital for maintaining bodily functions, including temperature regulation, nutrient transport, and waste elimination. Individual needs may vary based on factors such as activity level, climate, and overall health. Staying adequately hydrated is crucial for optimal physical performance, cognitive function, and general well-being, ensuring that the body operates efficiently.