The recommended amount of water intake for active adults is generally around 3.7 liters (or 125 ounces) for men and 2.7 liters (or 91 ounces) for women per day, including all beverages and food. However, factors such as exercise intensity, climate, and individual health can influence hydration needs. Staying adequately hydrated is essential for optimal performance, energy levels, and overall health. Listening to the body's signals for thirst is important, along with considering additional hydration during physical activities.