Sustainable weight management requires an integrative approach that includes physical activity, exercise & behavioral therapy to promote long-term health benefits. Regular exercise improves metabolic function, enhances insulin sensitivity, and aids in fat loss while preserving lean muscle mass. Structured programs combining aerobic and resistance training are particularly effective in reducing obesity-related risks. However, psychological barriers such as low motivation, emotional eating, and poor self-efficacy often hinder adherence. Behavioral therapy interventions, including cognitive-behavioral strategies, goal setting, and self-monitoring, help individuals develop healthier habits. Incorporating exercise into daily routines, coupled with behavioral modifications, has been shown to improve weight outcomes and mental well-being. A multidisciplinary approach combining lifestyle interventions with psychological support can foster long-term success in weight control and overall quality of life.