The global rise in health challenges caused by increases in obesity underscores the urgent need for effective interventions. Among potential strategies, exercise is well-documented for its broad health benefits, including its impact on dietary preferences and body composition. Our findings suggest that chronic exercise decreases sugar intake and dopamine levels after sugar consumption, along with decreased fat mass and increased lean mass. Long-term exercise not only reshapes dietary preferences but also promotes favorable changes in body composition. This study provides insights into how exercise could be leveraged as a therapeutic strategy to address obesity and related metabolic disorders, offering new avenues for intervention. Future research will focus on comparing the effects of different types of exercise on food choices and how these regimens influence dietary preferences and body composition. The next step will involve investigating the neural pathways that regulate dopamine release during sugar consumption, further elucidating the mechanisms by which exercise modulates dietary behavior and the body