Resistance training impacts metabolism by increasing muscle mass, which in turn elevates the basal metabolic rate (BMR). Greater muscle mass requires more energy at rest, leading to more calories burned throughout the day. Additionally, resistance training stimulates the production of hormones such as testosterone and growth hormone, which further support muscle growth and fat loss. Engaging in regular resistance training can also lead to improved insulin sensitivity, aiding in glucose regulation. Overall, it plays a critical role in enhancing metabolic health and supporting long-term weight management.