For every pound of muscle you build, how many extra calories does your body burn a day?

Studies have estimated that for each pound of muscle that you add to your body, you burn an additional 35 to 50 calories per day. So, an extra 10 pounds of muscle will burn approximately 350 to 500 calories a day, or an extra pound of fat every 7 to 10 days, without making any other changes. In another study, researchers found that regular weight training boosts basal metabolic rate by about 15%. This is because muscle is 'metabolically active ' and burns more calories than other body tissue even when you're not moving.