Yes, weightlifting can be an effective method for burning calories and improving metabolism. Olya Schaefer, a personal trainer and registered nutritionist, says, “Muscle is metabolically active. This means that muscle burns calories, not just during a workout, but all day long. By increasing your muscle mass through weight training, you boost your basal metabolic rate (BMR), which is the number of calories you burn while at rest. The more muscle you have, the more calories you burn.”