Objective: To find the effect of acute lumber Mckenzie extension exercise and core stability exercise on cardiovascular and temperature response Method: 30 undergraduate female students from various institutions of Sumaneep Vidyapeeth, Vadodara were recruited through random sampling method. Subjects were divided into control group, lumbar Mckenzie extension exercise group and core stability exercise group. Subjects were tested for temperature and RPP before and after the intervention. Results: There is statistically significant difference between pre and post values of variables of interest in both groups with p value ? 0.03 except temperature in control group with p? 0.19. Post intervention value of temperature shows no significant difference between groups with p? 0.218, 0.545 and 0.600 respectively. Conclusion: Both core stability exercises and Mckenzie extension exercises are very effective to improve cardiovascular fitness but regarding metabolic activity these exercises are not showing great changes particularly the body temperature. __ampersandsignnbsp;