Participation in sport and physical activity has a great effect on the well-being of the individual and the reduction of negative, but also the increase of positive aspects of body image. Therefore, the aim of the study was to examine the relationship between time spent exercising, two types of motivation for exercise and three aspects of positive body image. The study involved 508 participants, most of which (379) were women, 126 men and 3 nonbinary persons. The age of participants was between 14 and 73. Most of the participants (413) were involved in recreational sport activities, and 95 participants were professional athletes. Measurements used in this research were Function of exercise scale (FES), Internal body orientation scale (SS), Functional body image scale (FBI), Body appreciation scale – 2 (BAS – 2), and time spent exercising. Study was conducted online via Google forms. The findings indicate a statistically significant positive association between time spent exercising and both motivations to exercise. Statistically significant negative association was found between appearance-based exercise motivation and internal body orientation, statistically significant positive association between appearance-based exercise motivation and functional body image, and no statistically significant association were found between appearance-based exercise motivation and body appreciation. Health and enjoyment based-exercise motivation was found to be statistically significantly and positively associated with all three aspects of positive body image. Both exercise motivations were not found to be significant moderators between time spent exercising and internal body orientation and body appreciation also. Health and enjoyment based-exercise motivation was found to be a significant moderator between time spent exercising and functional body image. These results show that health and enjoyment based-exercise motivation partially moderates the relationship between time spent exercising and positive body image, but future research is needed.