Fluid intake refers to the consumption of liquids necessary for maintaining hydration and overall health. It is essential for various bodily functions, including digestion, circulation, and temperature regulation. Adequate fluid intake helps prevent dehydration, which can lead to serious health issues. The recommended amount of fluid intake varies by age, gender, and activity level. Common sources of fluids include water, beverages, and foods with high water content, such as fruits and vegetables. Monitoring fluid intake is crucial, especially in hot weather or during physical activity, to ensure optimal health and well-being.