Lifting weights influences metabolism primarily by increasing muscle mass. Muscle tissue burns more calories at rest compared to fat tissue, thereby enhancing the body's basal metabolic rate (BMR). As one consistently engages in strength training, their overall muscle mass can increase, leading to a higher calorie burn throughout the day. Additionally, intense exercise, including weight lifting, can elevate the metabolic rate for hours post-workout, known as the afterburn effect. This phenomenon further contributes to calorie expenditure and supports weight management and fat loss goals.