This study determined the relationship between circuit training on athletes’ behavior and performance. Specifically, it sought to identify the level of circuit training in terms of time efficiency, strength and endurance, variety, and adaptability, the level of student athletes’ behavior in terms of competitiveness, goal-oriented, responsibility, and resilience, the level of student-athlete performance in terms of practical test, the significant relationship between circuit training and student-athletes behavior, significant relationship between circuit training and student-athletes performance, This research uses a descriptive design that utilizes a quantitative method that using a simple random sampling technique. The respondents were 80 student-athlete from City College of Tagaytay. A self-made survey questionnaire was used in this study. Findings show that the level of circuit training in terms of time efficiency, strength and endurance, variety, and adaptability appears to strongly agree with the verbal interpretation of very high, the level of student athletes’ behavior in terms of competitive, goal-oriented, responsibility, and resilience appears to strongly agree with the verbal interpretation of very high, the level of student-athlete performance in terms of practical tests appears to be satisfactory. Lastly, the relationship between circuit training and student-athletes' behavior and the relationship between circuit training and student-athletes performance are both significantly as manifested by lower probability values in its indicator. Thus, the researcher therefore concludes that the research null hypotheses are rejected. There is a significant relationship between circuit training and student-athletes behavior. Which implies that circuit training and student-athletes' behavior underscores the impact of structured physical training on various aspects of behavior and personal development. Circuit training, a form of exercise that combines cardiovascular fitness and strength training in a rotating sequence of activities, offers distinct benefits that can influence athletes' discipline, mental health, social interactions, and academi c performance. There is a significant relationship between circuit training and student-athletes Performance. Which implies that circuit training enhances physical attributes such as strength, endurance, and agility, but it also improves psychological resilience and concentration, all of which are crucial for athletic success. Schools and sports programs should consider integrating or continuing to support circuit training in their training regimes to maximize these benefits, ensuring that student-athletes can achieve and maintain peak performance levels. Based on the drawn conclusions resulted to the following recommendations: Student-athletes should undergo regular training to maintain their peak condition, It is suggested that school's official especially the athletic director make a comprehensive training manual for student-athletes.