A good metabolism doesn't happen by accident. Your life choices play a big part! Muscle burns fat, and is the driving force behind your metabolism.So if you want to get rid of the fat on your body, lift weights. The more muscle you have on your body the more fat you will burn and the more calories you will burn! 5 pounds of muscle burns 250 calories a day, so you could lose 28 pounds in a year without spending an extra minute on cardio.