Background - The lung and heart have been predominantly impacted by the cov-19 pandemic worldwide. Physiotherapists are currently crucial in the evaluation and management of patients as well as the many measures implemented by the Indian government to address the crises, which have a big influence on citizens' daily life. This study compares CRF between post-cov-19 and non-cov-19 individuals as its main goal. Objective of study - Hypothesis of research - There will be a significant difference between post-covid-19 and non- covid-19 individuals on cardiorespiratory fitness. Null Hypothesis: There will be no significant difference between post-covid-19 and noncovid-19 individuals on cardiorespiratory fitness. Methodology -A cross-sectional study was performed. We enrolledthe post-cov-19 individuals who had been diagnosed with cov-19 infection before five months and also enrolled the non-cov19 individuals. A total of 30 samples were collected, and the data was analyzed using SPSS software. The Harvard step test and YMCA step test were performed for the evaluation of CRF. Results- Independent Student- Compare the two groups using the sample size (15 post-covid group 1 and 15 non-covid group 2) and obtain a P value of 0.05. Therefore, the findings show that there is a significant difference in cardiorespiratory fitness between post-cov-19 and non-cov-19 individuals. Conclusion - This study found the significant reduction of cardiorespiratory fitness among the post-cov19 individuals as compares to non cov-19 individuals