Fluid loss refers to the reduction of bodily fluids, which can occur due to various factors such as sweating, vomiting, diarrhea, or excessive urination. This loss can lead to dehydration, a condition where the body does not have enough water to function properly. Maintaining proper hydration is essential for overall health, as fluids play a critical role in processes like temperature regulation and nutrient transport. When fluid loss occurs, it is important to replenish lost fluids through drinking water or consuming electrolyte-rich beverages. Severe fluid loss can lead to serious health issues, including kidney problems and heat-related illnesses. Monitoring fluid intake and recognizing signs of dehydration, such as thirst and dark urine, can help prevent complications.