The effect of belly brushing depends on many factors, including your physical condition, living habits and execution methods. The effect of regular belly brushing depends on many factors, including your physical condition, living habits and execution methods. It can also dredge meridians, improve immunity, reduce the occurrence of diseases and help improve obesity. Brushing stomach can reduce body shape, improve obesity, help improve personal image and promote physical and mental health, but brushing stomach can not directly increase muscle mass.