Weight training positively affects metabolism by increasing muscle mass, which in turn elevates resting metabolic rate. With more muscle, the body requires more energy to maintain its tissue, which leads to increased caloric burn throughout the day, even at rest. This metabolic boost can aid in weight management and fat loss, supporting overall fitness goals. Additionally, weight training stimulates the release of hormones, such as testosterone and growth hormone, which further enhance metabolic functioning. Incorporating regular strength training into a fitness regimen helps individuals achieve a better body composition and improves overall physical performance.