Resistance training supports weight management by increasing muscle mass, which can enhance the body's resting metabolic rate. This increase in metabolism means the body burns more calories even at rest, aiding in weight loss or maintenance. Additionally, resistance training helps prevent the loss of muscle that often occurs during weight loss, ensuring that the majority of weight lost is fat, not muscle. This type of training also improves insulin sensitivity, which plays a crucial role in managing body weight and reducing fat storage.