Strength training positively affects metabolic rate by increasing muscle mass, which in turn boosts daily calorie expenditure. Muscle tissue is metabolically active, meaning it burns more calories at rest compared to fat tissue. Regular strength training not only enhances muscle tone and strength but also improves overall body composition, aiding in weight management. Furthermore, it promotes fat loss while preserving lean mass, helping to combat the natural decline in metabolism that occurs with age. Overall, incorporating strength training into a fitness routine is essential for optimizing metabolic health.