Background: Identification of body mass and physical activity status in women may be helpful for improving their reproductive health. The purpose of the current research was to analyze and compare the body mass index (BMI) and physical activity level (PAL) among women with and without infertility. Methods: This descriptive-analytical research was conducted on 150 infertile women who referred to therapeutic centers of Shahrekord to treat infertility and 150 fertile women using filed study method. Physical activity questionnaire was then filled in by these women. The height and weight were measured using Seca stadiometer and digital scale based on standard methods, and then, BMI was calculated and the values were compared. The Mann-Whitney test was used to analyze data and the significance level was considered P<0.05. Results: The physical activity score of infertile women was estimated to be low in this study that indicates sporting inactivity or very low PAL in subjects. The overall prevalence of underweight, normal weight, overweight, and obesity in infertile subjects were 8.7%, 26.7%, 34.7%, and 30%, respectively. The frequency of overweight and obesity was reported to be significantly higher in these subjects. The physical activity score of fertile women was estimated to be medium, and the prevalence of underweight, normal weight, overweight, and obesity in fertile subjects were 29.8%, 40.4%, 17.2%, and 11.3%, respectively. Conclusion: Results from the study emphasize the importance of body composition and creation of interest among women to do exercise and gain normal weight and keep it off to achieve healthy fertility
