Background: Androgenetic alopecia(AGA) is the most common type of hair loss. It has been thought that non-genetic factors also play an important role in development of AGA, along with genetic background.Objectives: This study was designed to analyze the association among AGA and exercise-related environmental etiologic factors. Methods: Questionnaires of 1,182 healthy individuals were analyzed. The subjects visited occupational medical clinic for regular medical checkup, and they had no underlying diseases. The data included frequency and intensity of exercise, and basic patient information. BASP classification was used to classify AGA patients. Results: Alopecia patients exercise more than normal population(p=0.008). In male alopecia group, the frequency of mild intensity of exercise was significantly higher(p=0.03) than normal group. In female alopecia group, the frequency of mild and moderate intensity of exercise was significantly higher(p=0.029). According to the BASP classification, there was no difference among basic type groups. On the other hands, the frequency of exercise showed no statistically significant correlations, neither did the severity of AGA. Conclusion: This is the first large-scaled study designed to analyze the association between exercise and alopecia. According to the result, the intensity and frequency of exercise was higherin alopecia patients, especially when it comes to mild exercise. Further study designed for pathophysiology is necessary.