This study aims to test the impact of consuming sodium-containing drinks (Pocari Sweat) on hydration levels during the bleep test, using urine color as an indicator. This study uses a quantitative method with a one group pretest-posttest quasi-experimental design. The research subjects were 10 undergraduate students of Sports Coaching Education at Surabaya State University, and was conducted at the Surabaya State University Basketball Court in December 2025. The instruments used are urine cups and images of urine hydration levels. Data was collected through observation, questionnaires, and documentation. The results of the study showed a significant difference in hydration levels after consuming sodium-containing fluids. In general, students who consumed sodium chloride showed brighter urine color, which indicates better body hydration conditions, compared to those who only consumed mineral water. This difference is associated with the electrolyte content (sodium, potassium, and magnesium) in sodium-containing drinks, which helps the absorption of fluids into cells more quickly and efficiently, and prevents excessive water excretion through urine. Mineral water, on the other hand, only replaces fluids without replacing lost electrolytes. It was concluded that sodium-containing drinks were more effective in maintaining and improving body hydration than regular mineral water, and it is important for athletes to pay attention to their intake of fluids containing electrolytes to maintain performance and minimize the risk of dehydration.