Resistance training plays a significant role in weight loss by increasing lean muscle mass, which enhances metabolic rate. As muscle tissue burns more calories than fat, even at rest, incorporating strength training into a fitness regime can accelerate fat loss. Moreover, resistance exercises help improve body composition, leading to a leaner appearance. This type of training also enhances overall strength, which can benefit other physical activities. It's advisable to combine resistance training with aerobic exercise for comprehensive weight loss results.