The primary component of body mass is water, which constitutes about 60% to 70% of the human body's total weight, depending on age, sex, and body composition. Water is vital for various physiological functions, including temperature regulation, joint lubrication, nutrient transport, and waste elimination. Besides water, body mass includes proteins, fats, carbohydrates, and minerals. The proportion of these components varies among individuals. Maintaining proper hydration is essential for overall health and wellbeing, as dehydration can significantly affect physical and cognitive performance, as well as lead to serious health issues.