How does resistance training impact metabolism?

Resistance training significantly impacts metabolism by increasing muscle mass, which in turn elevates the resting metabolic rate. When you engage in resistance training, the stress placed on your muscles leads to micro-tears, prompting your body to rebuild stronger muscle fibers. This process requires energy, which means your body continues to burn calories even at rest as it recovers and repairs.

Muscle tissue is metabolically active, meaning that it requires more energy to maintain than fat tissue. Therefore, as muscle mass increases, the resting metabolic rate also rises. This enhancement in metabolism can contribute to better weight management and overall health, making it beneficial for those looking to improve their fitness levels.

The other options present different misconceptions regarding the effects of resistance training. It does not decrease metabolic rate nor does it have no effect; on the contrary, it stimulates metabolic processes. Additionally, resistance training does not lead to a reduction in muscle mass; rather, it promotes muscle growth, which is integral to increasing energy expenditure.