The relationship between the nervous system and weight gain is complex and multifaceted. When the body is under stress, the sympathetic nervous system is activated, which triggers the release of the hormone cortisol. Cortisol can lead to increased appetite, particularly for high-calorie, high-carbohydrate foods, as well as increased storage of fat in the abdominal area. Chronic stress can also disrupt sleep, which can further exacerbate weight gain. However, stress-induced weight gain is not solely due to physiological factors. Stress can also lead to emotional eating and a decrease in physical activity, both of which can contribute to weight gain. Therefore, managing stress through relaxation techniques, regular exercise, and a balanced diet is essential for maintaining a healthy weight.