Two “expert” fitness websites contradict each other – according to one “each additional pound of muscle equates to an increase of 50 kcal of resting metabolism each day” but the other online site suggests “you will burn an additional 30 calories a day by adding a pound of muscle mass.” Which is correct? As you may expect from the internet, neither website is correct. Presumably these inflated numbers come from antiquated studies with poor conclusions that looked at the effects of resistance training on muscle mass gains and metabolism. Several early studies demonstrated gains of 1.5-2 kg of lean mass in untrained individuals performing resistance training for 8-12 weeks. The metabolic result was a daily increase of 200-300 calories above previous measured daily expenditure. Doing some simple math, if a person added 3 pounds of muscle and burned 240 calories more per day the net gain would be 80 kcals per pound. But this would not be the doing of lean mass alone.
A Pound of Muscle Burns 30-50 Kcal Day, Really... has been added to your basket.