Many high school students do not drink enough water during the day because of busy schedules, long study hours, lack of awareness, or limited access to clean drinking water. As a result, they often suffer from dehydration, which can negatively affect their health and academic performance. Dehydration can cause tiredness, headaches, dizziness, lack of concentration, and weakness, making it difficult for students to focus in class or participate in activities. In hot weather or during sports, the risk becomes even higher. This problem not only affects students physically but also impacts their learning ability, energy levels, and overall well-being. Therefore, encouraging proper water intake among students is important for maintaining good health and improving their daily performance in school.